UT Link Module

Transcription

UT Link Module

User’s
Manual
UT Link Module
IM 34M6H25-01E
IM 34M6H25-01E
Yokogawa Electric Corporation
1st Edition
i
Applicable Product:
● Range-free Multi-controller FA-M3
Model
Name
:
:
F3LC51-2N
UT Link Module
The document number and document model code for this manual are given below.
Refer to the document number in all communications; also refer to the document
number or the document model code when purchasing additional copies of this manual.
Document No.
Document Model Code
Media No. IM 34M6H25-01E (CD)
1st Edition : Nov. 2001 (AR)
All Rights Reserved Copyright  2001, Yokogawa Electric Corporation
:
:
IM 34M6H25-01E
DOCIM
IM 34M6H25-01E
1st Edition : Nov 1, 2001-00
ii
Important
About This Manual
-
This Manual should be passed on to the end user.
Before using the controller, read this manual thoroughly to have a clear
understanding of the controller.
This manual explains the functions of this product, but there is no guarantee that
they will suit the particular purpose of the user.
Under absolutely no circumstances may the contents of this manual be transcribed
or copied, in part or in whole, without permission.
The contents of this manual are subject to change without prior notice.
Every effort has been made to ensure accuracy in the preparation of this manual.
However, should any errors or omissions come to the attention of the user, please
contact the nearest Yokogawa Electric representative or sales office.
Safety Precautions when Using/Maintaining the Product
-
The following safety symbols are used on the product as well as in this manual.
Danger. This symbol on the product indicates that the operator must follow the
instructions laid out in this instruction manual to avoid the risk of personnel injuries,
fatalities, or damage to the instrument. The manual describes what special care
the operator must exercise to prevent electrical shock or other dangers that may
result in injury or the loss of life.
Protective Ground Terminal. Before using the instrument, be sure to ground this
terminal.
Function Ground Terminal. Before using the instrument, be sure to ground this
terminal.
Alternating current. Indicates alternating current.
Direct current. Indicates direct current.
IM 34M6H25-01E
iii
The following symbols are used only in the instruction manual.
WARNING
Indicates a “Warning”.
Draws attention to information essential to prevent hardware damage, software
damage or system failure.
CAUTION
Indicates a “Caution”
Draws attention to information essential to the understanding of operation and
functions.
TIP
Indicates a “TIP”
Gives information that complements the present topic.
SEE ALSO
Indicates a “SEE ALSO” reference.
Identifies a source to which to refer.
-
-
-
-
For the protection and safe use of the product and the system controlled by it, be
sure to follow the instructions and precautions on safety stated in this manual
whenever handling the product. Take special note that if you handle the product in
a manner other than prescribed in these instructions, the protection feature of the
product may be damaged or impaired. In such cases, Yokogawa cannot guarantee
the quality, performance, function and safety of the product.
When installing protection and/or safety circuits such as lightning protection devices
and equipment for the product and control system as well as designing or installing
separate protection and/or safety circuits for fool-proof design and fail-safe design of
processes and lines using the product and the system controlled by it, the user
should implement it using devices and equipment, additional to this product.
If component parts or consumable are to be replaced, be sure to use parts specified
by the company.
This product is not designed or manufactured to be used in critical applications
which directly affect or threaten human lives and safety — such as nuclear power
equipment, devices using radioactivity, railway facilities, aviation equipment, air
navigation facilities, aviation facilities or medical equipment. If so used, it is the
user’s responsibility to include in the system additional equipment and devices that
ensure personnel safety.
Do not attempt to modify the product.
Exemption from Responsibility
-
-
Yokogawa Electric Corporation (hereinafter simply referred to as Yokogawa Electric)
makes no warranties regarding the product except those stated in the WARRANTY
that is provided separately.
Yokogawa Electric assumes no liability to any party for any loss or damage, direct or
indirect, caused by the user or any unpredictable defect of the product.
IM 34M6H25-01E
iv
Software Supplied by the Company
-
Yokogawa Electric makes no other warranties expressed or implied except as
provided in its warranty clause for software supplied by the company.
Use the software with one computer only. You must purchase another copy of the
software for use with each additional computer.
Copying the software for any purposes other than backup is strictly prohibited.
Store the original media, such as floppy disks, that contain the software in a safe
place.
Reverse engineering, such as decompiling of the software, is strictly prohibited.
No portion of the software supplied by Yokogawa Electric may be transferred,
exchanged, or sublet or leased for use by any third party without prior permission by
Yokogawa Electric.
IM 34M6H25-01E
v
General Requirements for Using the FA-M3 Controller
● Avoid installing the FA-M3 controller in the following locations:
-
Where the instrument will be exposed to direct sunlight, or where the operating
temperature exceeds the range 0°C to 55°C (0°F to 131°F).
Where the relative humidity is outside the range 10 to 90%, or where sudden
temperature changes may occur and cause condensation.
Where corrosive or flammable gases are present.
Where the instrument will be exposed to direct mechanical vibration or shock.
Where the instrument may be exposed to extreme levels of radioactivity.
● Use the correct types of wire for external wiring:
-
Use copper wire with temperature ratings greater than 75°C.
● Securely tighten screws:
-
Securely tighten module mounting screws and terminal screws to avoid problems
such as faulty operation.
Tighten terminal block screws with the correct tightening torque as given in this
manual.
● Securely lock connecting cables:
-
Securely lock the connectors of cables, and check them thoroughly before turning
on the power.
● Interlock with emergency-stop circuitry using external relays:
-
Equipment incorporating the FA-M3 controller must be furnished with emergencystop circuitry that uses external relays. This circuitry should be set up to interlock
correctly with controller status (stop/run).
● Ground for low impedance:
-
For safety reasons, connect the [FG] grounding terminal to a Japanese Industrial
Standards (JIS) Class D Ground*1 (Japanese Industrial Standards (JIS) Class 3
Ground). For compliance to CE Marking, use cables such as twisted cables which
can ensure low impedance even at high frequencies for grounding.
*1 Japanese Industrial Standard (JIS) Class D Ground means grounding resistance of 100Ω max.
● Configure and route cables with noise control considerations:
-
Perform installation and wiring that segregates system parts that may likely become
noise sources and system parts that are susceptible to noise. Segregation can be
achieved by measures such as segregating by distance, installing a filter or
segregating the grounding system.
● Configure for CE Marking Conformance:
-
For compliance to CE Marking, perform installation and cable routing according to
the description on compliance to CE Marking in the “Hardware Manual”
(IM34M6C11-01E).
IM 34M6H25-01E
vi
● Keep spare parts on hand:
-
Stock up on maintenance parts including spare modules, in advance.
● Discharge static electricity before operating the system:
-
Because static charge can accumulate in dry conditions, first touch grounded metal
to discharge any static electricity before touching the system.
● Never use solvents such as paint thinner for cleaning:
-
Gently clean the surfaces of the FA-M3 controller with a cloth that has been soaked
in water or a neutral detergent and wringed.
Do not use volatile solvents such as benzine or paint thinner or chemicals for
cleaning, as they may cause deformity, discoloration, or malfunctioning.
● Avoid storing the FA-M3 controller in places with high temperature or
humidity:
-
-
Since the CPU module has a built-in battery, avoid storage in places with high
temperature or humidity.
Since the service life of the battery is drastically reduced by exposure to high
temperatures, take special care (storage temperature should be from –20°C to
75°C).
There is a built-in lithium battery in a CPU module and temperature control module
which serves as backup power supply for programs, device information and
configuration information. The service life of this battery is more than 10 years in
standby mode at room temperature. Take note that the service life of the battery
may be shortened when installed or stored at locations of extreme low or high
temperatures. Therefore, we recommend that modules with built-in batteries be
stored at room temperature.
● Always turn off the power before installing or removing modules:
-
Failing to turn off the power supply when installing or removing modules, may result
in damage.
● Do not touch components in the module:
-
In some modules you can remove the right-side cover and install ROM packs or
change switch settings. While doing this, do not touch any components on the
printed-circuit board, otherwise components may be damaged and modules may fail
to work.
IM 34M6H25-01E
vii
Waste Electrical and Electronic Equipment
Waste Electrical and Electronic Equipment (WEEE), Directive 2002/96/EC
(This directive is only valid in the EU.)
This product complies with the WEEE Directive (2002/96/EC) marking requirement.
The following marking indicates that you must not discard this electrical/electronic
product in domestic household waste.
Product Category
With reference to the equipment types in the WEEE directive Annex 1, this product is
classified as a “Monitoring and Control instrumentation” product.
Do not dispose in domestic household waste.
When disposing products in the EU, contact your local Yokogawa Europe B. V. office.
IM 34M6H25-01E
viii
Introduction
Overview of this Manual
This manual explains the UT Link Module, which can be used to configure an FA-M3
system.
How to Read this Manual
If you are a first-time reader of this manual, read chapters 1 to 4. For efficiency, read
only the relevant remaining chapters, as required. A “$” symbol preceding a numeric
value indicates a hexadecimal number.
Other Manuals
The manuals to refer depend on the CPU module used. Read the following manuals as
required.
F3SP28
F3SP38
F3SP53
F3SP58
For information on functions of sequence CPU
-
Sequence CPU Modules - Functions (for F3SP28, F3SP38, F3SP53, F3SP58)
(IM34M6P13-01E)
For creating ladder programs
-
FA-M3 Programming Tool WideField (IM34M6Q14-01E)
FA-M3 Programming Tool WideField - Application (IM34M6Q14-02E)
F3SP05
F3SP21
F3SP25
F3SP35
-
Sequence CPU Modules - Functions (for F3SP21, F3SP25, F3SP35)
(IM34M6P12-02E)
For creating ladder programs
-
FA-M3 Programming Tool WideField (IM34M6Q14-01E)
- FA-M3 Programming Tool WideField - Application (IM34M6Q14-02E)
or
-
Ladder Diagram Support Program M3 (IM34M6Q13-01E)
Common for all sequence
CPU modules
-
Sequence CPU Modules - Instructions (IM34M6P12-03E)
IM 34M6H25-01E
ix
For information on BASIC CPU Module and YM-BASIC/FA Program
Syntax
-
BASIC CPU Module and YM-BASIC/FA Programming Language
(IM34M6Q22-01E)
For information on the specifications and configuration*1, installation
and wiring, test runs, maintenance and inspection of the FA-M3, and
system-wide restrictions on module installation
*1:
Hardware Manual (IM34M6C11-01E)
For product specifications of products other than power supply modules, base modules, I/O modules, cables and
terminal block units, see their respective manuals.
IM 34M6H25-01E
x
Copyrights and Trademarks
Copyrights
Copyrights of the programs and online manual included in this CD-ROM belong to
Yokogawa Electric Corporation.
This online manual may be printed but PDF security settings have been made to prevent
alteration of its contents.
This online manual may only be printed and used for the sole purpose of operating this
product. When using a printed copy of the online manual, pay attention to possible
inconsistencies with the latest version of the online manual. Ensure that the edition
agrees with the latest CD-ROM version.
Copying, passing, selling or distribution (including transferring over computer networks)
of the contents of the online manual, in part or in whole, to any third party, is strictly
prohibited. Registering or recording onto videotapes and other media is also prohibited
without expressed permission of Yokogawa Electric Corporation.
Trademarks
The trade names and company names referred to in this manual are either trademarks
or registered trademarks of their respective companies.
IM 34M6H25-01E
TOC-1
FA-M3
UT Link Module
IM 34M6H25-01E 1st Edition
Content
Applicable Product ....................................................................................i
Important ...................................................................................................ii
Introduction............................................................................................viii
Copyrights and Trademarks ....................................................................x
1.
2.
Overview ....................................................................................... 1-1
1.1
Overview................................................................................................... 1-1
1.2
External Instruments that can be Connected....................................... 1-1
Specifications ............................................................................... 2-1
2.1
Model Names and Specification Codes ................................................ 2-1
2.2
Compatibility with CPU Modules ........................................................... 2-1
2.3
Function Specifications.......................................................................... 2-1
2.4
Components and their Functions .......................................................... 2-2
2.5
External Dimensions and Weight .......................................................... 2-3
2.6
Connecting to External Instruments ..................................................... 2-4
2.7
Setting Communication Conditions ...................................................... 2-6
2.8
3.
5.
Recommended Communication Conditions ................................ 2-6
2.7.2
Setting Up the UT Link Module .................................................... 2-6
2.7.3
Self Diagnosis .............................................................................. 2-8
Attaching and Detaching Modules....................................................... 2-10
Types of Communication Methods ............................................. 3-1
3.1
4.
2.7.1
Automatic Mode, Manual Mode and Command Communication ....... 3-1
3.1.1
Automatic Mode and Manual Mode ............................................. 3-1
3.1.2
Command Communication .......................................................... 3-3
3.2
Register Configuration and Signal Path of the UT Link Module ........ 3-4
3.3
Sample D Register Map of an External Instrument.............................. 3-7
Refresh Station Designation in Automatic Mode and
Manual Mode ................................................................................ 4-1
4.1
When Refresh Station Designation is Not Performed in
Automatic Mode....................................................................................... 4-1
4.2
Refresh Station Designation .................................................................. 4-2
Details of Automatic Mode .......................................................... 5-1
5.1
Startup Procedure ................................................................................... 5-1
5.2
Input/Output Relays Used in Automatic Mode ..................................... 5-2
5.3
Reading and Writing Data in Automatic Mode ..................................... 5-4
IM 34M6H25-01E
TOC-2
5.4
6.
7.
Details of Manual Mode................................................................ 6-1
6.1
Startup Procedure.................................................................................... 6-2
6.2
Input/Output Relays Used in Manual Mode........................................... 6-3
6.3
Setting Mode Registers (Communication Conditions) ....................... 6-5
6.4
Configuration Setup (Communication Range) ..................................... 6-7
6.5
Reading and Writing Data in Manual Mode ......................................... 6-10
6.6
Sample Program .................................................................................... 6-11
Details of Command Communication ......................................... 7-1
7.1
Startup Procedure.................................................................................... 7-2
7.2
Input/Output Relays Used in Command Communication ................... 7-3
7.3
Setting Mode Registers (Communication Conditions) ........................ 7-4
7.4
Command and Response........................................................................ 7-5
7.5
8.
9.
Sample Program ...................................................................................... 5-5
7.4.1
Data Areas Used in Command Communication........................... 7-5
7.4.2
Formats of Commands and Responses....................................... 7-6
Sample Program .................................................................................... 7-10
Accessing the UT Link Module.................................................... 8-1
8.1
Accessing Using Ladder Sequence Instructions ................................. 8-1
8.2
Accessing Using BASIC Statements ..................................................... 8-3
8.2.1
Declaring Use of Module .............................................................. 8-4
8.2.2
Reading and Writing Mode Registers........................................... 8-4
8.2.3
Reading and Writing Data Registers ............................................ 8-5
8.2.4
Reading and Writing Input and Output Relays ............................. 8-6
Errors and Troubleshooting ........................................................ 9-1
9.1
Error Handling.......................................................................................... 9-1
9.1.1
Module Error................................................................................. 9-3
9.1.2
Refresh Communication Error...................................................... 9-4
9.1.3
Command Communication Error.................................................. 9-7
9.1.4
Error Response ............................................................................ 9-8
9.2
Troubleshooting Flowchart When 'RDY' LED Is Not On .................... 9-10
9.3
Troubleshooting Flowchart When Communication Fails .................. 9-11
9.4
Troubleshooting Errors that Occur during Refresh Operation......... 9-12
9.5
Troubleshooting Errors that Occur during Command
Communication...................................................................................... 9-14
Appendix........................................................................................ Appx.-1
Appendix 1. Configuration Data Area ....................................................... Appx.-1
Appendix 2. Refresh Communication Data Area ..................................... Appx.-2
Appendix 3. Examples on Performance ................................................... Appx.-3
Appendix 4. Increasing Ladder Program Speed ...................................... Appx.-5
Index................................................................................................Index-1
Revision Information ................................................................................ i
IM 34M6H25-01E
1-1
1.
Overview
1.1
Overview
The UT Link Module (F3LC51-2N) connects and communicates with external
instruments, which support the FA-M3 personal computer link protocol. Section 1.2,
“External Instruments that can be Connected” lists some instruments which support the
PC link protocol. Connecting these to the UT link module allows users to exchange data
without knowledge of communications protocols and commands.
1.2
External Instruments that can be Connected
The following products are some external instruments, which can be connected to the
UT Link module.
Products of Yokogawa M&C Corporation
-
The range of instruments that can be accessed using the UT Link Module is given
below.
z Temperature Controllers UT100 Series
Instrument Name
Temperature controller
Model Name
UT130, UT150
UT152/UT155
Automatic
Mode
(Read)
D Registers
D0001 to D0009
Manual Mode,
Command Communication
(Read and Write)
D Registers
I Relays
D0001 to D0420
I0001 to I0048
*: For more information on automatic mode, manual mode and command communication, see Chapter 3, “Types of
Communication Methods”.
z Digital Indicating Controllers GREEN Series
Instrument Name
Digital indicating
controller
Program controller
Digital indicator with
alarms
Model Name
UT320,UT350
UT420,UT450
UT520,UT550,UT750
US1000
UP350
UP550,UP750
UM330,UM350
Automatic
Mode
(Read)
D Registers
D0001 to D0008
Manual Mode,
(Read and Write)
D Registers
I Relays
D0001 to D1300 I0001 to I0784
D0001 to D0025
D0001 to D1700
I0001 to I2048
D0001 to D0008
D0001 to D0025
D0001 to D1300
D0001 to D3300
I0001 to I0784
I0001 to I2048
D0001 to D0008
D0001 to D1300
I0001 to I0784
IM 34M6H25-01E
1-2
z Signal Conditioner JUXTA JV V3 Series
Instrument Name
Universal temperature
converter
Isolator
Distributor
Potentiometer transmitter
Pulse rate converter
Pulse/analog transmitter
Analog/pulse transmitter
Universal computing unit
Model Name
Automatic
Mode
(Read)
D Registers
Manual Mode,
(Read and Write)
D Registers
I Relays
VJU7
VJH7
VJA7
VJS7
VJP8
VJQ8
VJQ7
VJX7
D0001 to D0015
D0001 to D0128
I0001 to I0256
CAUTION
-
The information herein may be modified without notification. For details on the
external instruments, contact Yokogawa M&C Corporation.
When performing configuration, note that communication functions of many external
instruments for connecting to the UT link module are given only as supplementary
specifications.
IM 34M6H25-01E
1-3
-
The documents related to the communication functions are listed below.
z Temperature controllers UT100 Series
Instrument Name
Temperature controller
Model Name
UT130,UT150
UT152/UT155
Document No.
*1
IM 5C1E12-10E
Document Name
UT100 Series Communication
Functions Manual
*1: The document is not provided with the product and must be purchased separately.
z Digital Indicating Controllers GREEN Series
Instrument Name
Digital indicating
controller
Model Name
UT320,UT350
UT420,UT450
UT520,UT550
UT750
IM 05G01B02-01E*2
IM 05G01B02-02E*2
US1000
IM 5D1A01-10E*3
Program controller
UP350
UP550,UP750
Digital indicator with
alarms
UM330,UM350
Document No.
IM 05G01B02-01E*2
IM 05G01B02-02E*2
Document Name
GREEN Series Communication
Functions Manual
Reference
US1000 Digital Controller
Communication Functions Manual
Functions Manual
Reference
*2: An electronic version of the document is included on the CD-ROM shipped with the product. A printed hardcopy of the
document may be purchased separately.
z Signal Conditioner JUXTA JV V3 Series
Instrument Name
Universal temperature
converter
Isolator
Distributor
Potentiometer transmitter
Pulse rate converter
Pulse/analog transmitter
Analog/pulse transmitter
Universal computing unit
Model Name
Document No.
Document Name
VJU7
VJH7
VJA7
VJS7
VJP8
VJQ8
VJQ7
VJX7
IM 77J1J11-01E*3
VJ Series Communication
Functions Manual
*3: The document is not provided with the product and must be purchased separately.
CAUTION
-
The information herein may be modified without notification. For details on external
instruments, contact Yokogawa M&C Corporation.
When performing configuration, note that communication functions of many external
instruments for connecting to the UT link module are given only as supplementary
specifications.
IM 34M6H25-01E
1-4
CAUTION
-
-
Instrument names of the external instruments are represented as D registers and I
relays.
These are separate from the D registers and I relays of the FA-M3 sequence CPU.
They are clearly differentiated in this manual and should not be confused during
reading.
Registers of the UT link module are represented as numbers, known as “device
position numbers”.
Registers of the UT link module and external instruments consist of 1 word
(16 bits) per register.
IM 34M6H25-01E
2-1
2.
Specifications
2.1
Model Names and Specification Codes
Table 2.1 Model Names and Specification Codes of the UT Link Module
Basic
Specification
Code
-2N
Model
Name
F3LC51
2.2
Style Code
Specification
Code Suffix
…..
…..
Remarks
RS-422-A/RS-485 1 port
Compatibility with CPU Modules
The UT Link Module (F3LC51-2N) can be used with the following CPU modules.
Table 2.2 The list of CPU modules that are compatible with the UT Link Module and the
maximum number of units that can be installed
BASIC
CPU
F3SA30-0N *1
F3SP21-0N
F3SP25-2N
F3SP35-5N
F3SP28-3N
F3SP38-6N
F3SP53-4H
F3SP58-6H
F3FP36-3N
F3BP20-0N
F3BP30-0N
F3MP30-0N
F3LC51-2N
F3SA20-0N *1
UT
Link
Module
F3SP30-0N *1
CPU
F3SP20-0N *1
Sequence CPU
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
*1: For F3SP20-0N, F3SP30-0N, F3SA20-0N, F3SA30-0N CPU modules, the ROM must be of version 6 or later and the
UT Link Module must be installed in the main unit. For other CPU modules, the UT Link Module may be installed in
either the main unit or the sub unit.
2.3
Function Specifications
Table 2.3 Function Specifications of the UT Link Module
Item
Interface
Transmission mode
Synchronization
Transmission speed (bps)
Transmission media
Transmission distance
Number of connected
stations
Terminating resistor
Number of ports
Data format
Error detection
Xon/Xoff control
Ending character
Setup items
Current consumption
External connection
Description
EIA RS-422-A/RS-485 Compliant
Half-duplex, two-wire or four-wire
Asynchronous
300/600/1200/2400/4800/9600/19200/31250/38400
Shielded twisted-pair cable (AWG 20 to 16)
1200 m max. *1
*2
Setting Switch
Factory Setting
{
9600
{
{
{
8
Even
1
{
no
{
yes
32 stations max. *1
220Ω (built-in, termination is specified using a
switch)
1 port (insulated)
Start bit: 1
Data length: 7/8
Parity bit: none / even / odd
Stop bit: 1/2
Parity check
Checksum: yes / no
None
Yes / no
Transmission speed, data format, checksum and
ending character
290 mA
6-point terminal block, M3.5 screw
*1: The specifications of the external instruments may impose further constraints.
*2: Items marked with ‘{’ may be defined by the user using switches.
IM 34M6H25-01E
2-2
2.4
Components and their Functions
T Front View
RDY Display:
Lit when the internal circuitry
is functioning normally.
RDY
LC51-2N
UT LINK
TERMINATOR
2-
Terminating resistor switch:
Specify a 4-wire or 2-wire
system to terminate.
4-WIRE
OFF
SD A
SD B
RD A
RS-422-A/RS-485 terminal block
(6 terminals, M3.5 screws)
RD B
SG
SHIELD
Figure 2.1 Front View of the UT Link Module
T Right Side View
Front
Rear
This figure shows the
appearance when the panel
cover is removed
Transmission speed switch
2 3
4
7 8
2 3
4
5
6
9
0
1
6
9
5
0
1
Ｏ
Ｆ
Ｆ
１
２
３
４
５
６
Data format switch:
Defines the format of the
communication data
７
８
7 8
Communication mode switch
Figure 2.2 Right Side View of the UT Link Module
IM 34M6H25-01E
2-3
2.5
External Dimensions and Weight
Table 2.4 External Dimensions of the UT Link Module
*:
Width
28.9mm
Height
100.0mm
Depth
83.2mm
Weight
110gf
All dimensions exclude any protrusions.
Unit: mm
83.2
12.1
28.9
2
100
Figure 2.3 External Dimensions of the UT Link Module
IM 34M6H25-01E
2-4
2.6
Connecting to External Instruments
The UT link module allows external instruments to be connected through an RS-422-A/
RS-485 terminal block.
T RS-422-A/RS-485 Terminal Block
This terminal block uses M3.5 screws.
SD A
SD A Send Data A →
SD B
SD B Send Data B →
7.1mm
8.2mm
RD A
RD A Receive Data A ←
RD B
RD B Receive Data B ←
SG
SG
SHIELD
Grant Signal
SHIELD
Figure 2.4 RS-422-A/RS-485 Terminal Block
T Recommended Cables and Crimp-on Terminals
Table 2.5 Recommended Cables and Crimp-on Terminals
Crimp-on
Terminals
Connection type
Applicable cables
Crimp-on terminals
Tightening torque
Applicable
crimp-on terminals
Terminal block
Type:
Shielded twisted-pair cable
Number: 3 pairs
Size:
0.5 to 1.25 mm2
AWG No. 20 to AWG No.16 recommended
Example: CO-SPEV-SB (A) 3Px0.5 SQ from Hitachi Cable, Ltd.
For 3.5 mm screws
0.8N.m
Example:
Type V1.25-M3 (from Japan Solderless Terminal Mfg. Co., Ltd.)
or RAV1.25-3.5 (from Nippon Tanshi Co., Ltd.)
T Wiring the UT Link Module to External Instruments
Use a two- or four-wire system for connecting the UT link modules to external
instruments
F3LC51-2N
External device (1)
External device (2)
SD A
SD A (−)
SD B (+)
SD A (−)
SD B (+)
RD A (−)
RD A (−)
RD B (+)
RD B (+)
SD B
RD A
RD B
SG
SHIELD
(SD A)
(SD B )
(RD A)
(RD B)
(SG)
SG
SHIELD
220Ω
220Ω
SG
SHIELD
Set terminating switch to 4-wire.
Figure 2.5 Wiring Diagram (four-wire system)
IM 34M6H25-01E
2-5
F3LC51-2N
SD A
SD B
RD A
External instrument (1)
External instrument (2)
RS A (−)
RS A (−)
RS B (+)
RS B (+)
(SD A)
(SD B)
220Ω
RD B
SG
SHIELD
(SG)
SG
SG
SHIELD
SHIELD
Set terminating switch to 2-wire.
Figure 2.6 Wiring Diagram (two-wire system)
Tip
Use the built-in terminating resistor in the module on the F3LC51-2N side.
On the external instrument side, some external instruments may also have a built-in terminating resistor.
CAUTION
*:
On some external instruments, the signal polarities (A/B, +/-) may be reverse to
what is shown above. If a framing error occurs during communication, try to change
the connections appropriately for reversed polarities.
On some external instruments, the terminal markings may be different from what is
shown above. Perform the connections accordingly.
Signal polarities and terminal markings are not defined in the RS-422/485 standard.
T Setting Terminating Resistors
Set the terminating resistor to terminate a UT link module if the module is installed at the
end of a daisy chain network. For a four-wire system, set the switch to “4-WIRE”; for a
two-wire system, set it to “2-WIRE”. If the UT link module is not installed at either end of
a daisy chain network, set the switch to “OFF”.
TERMINATOR
4-WIRE
2OFF
F_UT51_1.VS
D
Figure 2.7 Setting the Terminating Resistor Switch
IM 34M6H25-01E
2-6
2.7
Setting Communication Conditions
2.7.1
Recommended Communication Conditions
Communication conditions should suit all external instruments to be connected. The
recommended communication conditions given below (also the factory setting of the UT
Link Module) suit most external instruments. However, you should double-check the
communication conditions for an external instrument in the following situations:
-
when connecting external instruments with different functions to a single UT Link
Module
when connecting old product models
Table 2.6 Recommended Communication Conditions
(the same as the factory setting of the UT Link Module)
Item
Transmission speed
Data length
Parity
Start bit
Stop bit
Ending character
Checksum
Setting up the UT Link Module
Parameters such as the data format and transmission speed can be set using switches
on the right side of the module. At power on, the UT Link Module reads the switch
positions and sets the communication conditions and automatic/manual mode
accordingly.
CAUTION
Always turn off the power to the module before attaching or detaching the module.
Front
Rear
This figure shows the
appearance when the panel
cover is removed
Transmission speed switch
5
0 1
4
6
9
7 8
2 3
7 8
9
4
5
0 1
2 3
6
2.7.2
Value
9600bps
8 bits
Even
1 bit
1 bit
Yes
No
Ｏ
Ｆ
Ｆ
１
２
３
４
５
６
Data format switch:
Defines the format of the
communication data
７
８
Figure 2.8 Right Side View of the Module
IM 34M6H25-01E
2-7
T Data Format Switch
Sets the data transmission format. Set the 8-bit DIP switch by sliding each switch to the
ON or OFF position.
Leave DIP Switch 8 unchanged at its factory setting.
O
F
F
1
No.
2
1
2
3
4
5
6
3
4
5
6
7
7
8
8
Setup Item
Data length
Parity
Stop bit
Checksum
Ending character
Automatic/
Manual mode
Unused
OFF
Factory
setting
ON
ON
ON
OFF
OFF
ON
ON
7 bit
No
Odd
1 bit
No
No
8 bit
Yes
Even
2 bit
Yes
Yes
Manual mode
Automatic mode
ON
Unused
Unused
OFF
F_UT51_1.VS
D
Figure 2.9 Data Format Switch Setting
T Transmission Speed Switch
Set the transmission speed using the decimal rotary switch. Insert a small flat-blade
screwdriver into the arrow slot and change the setting by changing the direction of the
arrow.
Do not use setting 9.
4
5
6
7 8
9 0 1
2 3
Setting
0
1
2
3
4
5
6
7
8
9
Transmission speed (bps)
300
600
1200
2400
4800
9600
19200
31250
38400
(Unused)
Remarks
Factory Setting
Figure 2.10 Transmission Speed Switch Setting
IM 34M6H25-01E
2-8
T Communication Mode switch
Set the communication mode using the decimal rotary switch. Insert a small flat-blade
screwdriver into the arrow slot and change the setting by changing the direction of the
arrow.
Setting “0” is used for self-diagnosis. Do not use setting values other than 0 and 7.
4
5
6
7 8
9 0 1
2 3
Setting
0
1
2
3
4
5
6
7
8
9
Communication mode
Module diagnosis
(Unused)
(Unused)
(Unused)
(Unused)
(Unused)
(Unused)
Normal operation
(Unused)
(Unused)
Remarks
Self diagnosis
Factory setting
Figure 2.11 Communication Mode switch Setting
Self Diagnosis
The UT link module features self-diagnostic functions for checking the module hardware.
To perform self-diagnosis, follow the steps below:
(1) Turn off the FA-M3 power supply.
(2) Detach the UT link module from the base module.
(3) Change the communication mode switch on the right side of the module from 7 to 0.
(4) Set the transmission speed switch to 9600 bps (position 5).
(5) Attach the module to the base module with wiring as shown in Figure 2.13.
(6) Turn on the power supply of the FA-M3 to start self-diagnosis.
Front
Rear
Transmission speed
switch
0 1
9
0 1
9 0 1
4
5
7 8
2 3
9 0 1
6
9
8
78
7 8
5
2
3
4
5
6
7
4
6
6
4
O
F
F
1
5
5
2 3
2 3
4
7 8
2 3
6
2.7.3
F_UT51_1.VSD
Figure 2.12 Communication Mode Switch Setting
IM 34M6H25-01E
2-9
UT Link Module
SD A
SD B
RD A
RD B
SG
SHIELD
Figure 2.13
Wiring for Self-Diagnosis
The self-diagnosis test results are reflected on the UT link module RDY LED as shown
in Table 2.7.
Tale 2.7
Self Diagnosis
RDY LED
Self Diagnosis Test Results
Lights up
Flashes or turns off
Normal
Error
CAUTION
After completing the self-diagnosis test, be sure to set the communication mode switch
to “7” and restore the transmission speed switch to its original position. Then, turn on
the power to start-up the system.
IM 34M6H25-01E
2-10
2.8
Attaching and Detaching Modules
T Attaching the Module
Figure 2.14 shows how to attach this module to the base module. First hook the anchor
slot at the bottom of the module to be attached onto the anchor pin on the bottom of
the base module. Push the top of this module towards the base module until the yellow
anchor/release button clicks into place.
CAUTION
Always switch off the power before attaching or detaching a module.
Base module
Anchor pin
This module
F01.VSD
Figure 2.14 Attaching/Detaching the Module
CAUTION
DO NOT bend the connector on the rear of the module by force during the above
operation. If the module is pushed with improper force, the connector may bend causing
an error.
T Detaching the Module
To remove this module from the base module, reverse the above operation. Press the
yellow anchor/release button on the top of this module to unlock it and tilt the module
away from the base module. Then lift the module off the anchor pin at the base.
IM 34M6H25-01E
2-11
■ Attaching Modules in Intense Vibration Environments
If the module is used in intense vibration environments, fasten the module with a screw.
Use screws of type listed in the table below. Insert these screws into the screw holes on
top of the module and tighten them with a Phillips screwdriver.
Screw Required
M4-size binder screw 12 to 15 mm long
(Or 14 to 15 mm if fitted with a washer)
F02R1.VSD
Figure 2.15 Tightening the Module
IM 34M6H25-01E
Blank Page
3-1
3. Types of Communication Methods
3.1 Automatic Mode, Manual Mode and Command
Communication
The UT Link Module supports two types of communication modes and command
communication. This chapter gives an overview of these two modes and command
communication. For more details, read the individual chapters.
Table 3.1 Operation of UT Link Module
Usage
Automatic mode
Manual mode
Command
communication
Communication Items
Fixed items of the external
instrument
(Not user-definable)
Regular communication
(Refresh operation)
User specified items of the
external instrument
Communicate when required
Automatic Mode
Communication Method
Manual Mode
Fixed communication items
for each external
instrument type.
Simple user program
Mode
selection
User-specified
communication items.
Slightly complicated
user program
User-specified communication items.
Complicated user program.
Regular
communication
(Refresh
operation)
Communicate
as and when
required
F_UT51_1.VS
Figure 3.1 Operation of the UT Link Module
3.1.1 Automatic Mode and Manual Mode
The UT Link Module supports an automatic mode for simple communications as well as
a manual mode for accessing any data of the external instrument. You can select to use
either of these modes using the data format switch*1.
The UT Link Module operates connected external instruments according to the mode
selected.
Both these modes perform cyclical regular communications, known as a “refresh
operation”.
*1: See Figure 2.9, “Data Format Switch Setting”.
IM 34M6H25-01E
3-2
T Automatic Mode
Using the automatic mode requires only a simple FA-M3 user program. In automatic
mode, the communication items are determined for each series of the external
instrument.
Except for some instrument series, the communication items of the external instrument
are designed to be read-only by the UT Link Module. Depending on the series of the
external instrument, the number of communication items ranges from 8 to 25
In automatic mode, all communications items are read to the UT Link Module. A user
program can then read any number of these items from the UT Link Module.
External instrument of different series may be connected to the same communication
line.
Furthermore, automatic mode can be used together with command communication.
-
Contact the manufacturer of an external instrument for information on the
communication items in automatic mode.
CAUTION
When using automatic mode together with command communication, start command
communication after the status bit for the station in the Remote Station Status storage
area (data position numbers: 3839, 3840*1) has turned on. Starting command
communication before the refresh station initial check for this station has been
completed in automatic mode*2 will disallow subsequent automatic mode communication
to this station.
*1: For details, see Figure 9.2, “Remote Station Status Register Configuration”
*2: See Section .4.1, “When Refresh Station Designation is Not Performed in Automatic Mode”.
When the initial check for a station is completed, its status bit in the Remote Station Status storage area (data position
numbers: 3839, 3840) turns on.
T Manual Mode
Manual mode allows reading and writing to most of the data in the external instruments.
The manual mode is convenient although the FA-M3 user program increases in size as
the number of communication items and the number of external instrument stations
increase.
The D register map of an external instrument (which is separate from the D registers of
the FA-M3 sequence CPU) describes what kind of data is allocated and the
communication items are selected from the allocated data.
Manual mode can be used together with command communication.
-
Contact the manufacturer of an external instrument for information on the D register
map of an external instrument.
CAUTION
-
The D register map of an external instrument contains read-only areas and access
prohibited areas. Do not write to or access these areas.
Up to 25 contiguous devices can be read or written for each station in manual
mode. Non-contiguous device numbers may not be specified.
IM 34M6H25-01E
3-3
3.1.2 Command Communication
T Command Communication
Command communication allows the user to communicate with external instruments as
and when required. Using command communication for communication items with low
access frequencies reduces reduction in the overall communication speed. Since the
communication items, external instrument station number and communication timing is
no longer transparent, the FA-M3 user program is more complicated.
Refresh communication during automatic mode or manual mode may be interrupted by
command communication.
The D register map of an external instrument (which is separate from the D registers of
the FA-M3 sequence CPU) describes what kind of data is allocated and the
communication items are selected from the allocated data.
-
Contact the manufacturer of an external instrument for information on the D register
map of an external instrument.
CAUTION
-
Up to 64 contiguous devices can be read or written for each station in command
communication mode. For non-contiguous device numbers, up to 24 devices may
be specified.
IM 34M6H25-01E
3-4
3.2 Register Configuration and Signal Path of the
UT Link Module
T Register Configuration
The UT Link Module has various input output relays and registers as shown in table 3.2
for transmitting data between external instruments and the FA-M3 user program. For
more details, see the table or figure numbers indicated within parenthesis.
See Chapter 8, “Accessing the UT Link Module” on how to access the input/output
relays and the various registers. Read Section 5.4, “Sample Program”, Section 6.6,
“Sample Program”, and Section 7.5, “Sample Program” too.
Table 3.2 Register Configuration of the UT Link Module
Data position
number
1
50
51
Input/Output relay
Relays for exchanging data between the FA-M3 user program and the
UT Link Module
Mode register
Stores the communication parameter values. (Table 6.2)
562
563
566
567
570
571
3770
3771
3840
3841
3940
3941
4040
Data Registers*2
564
565
*1
Configuration data area
Holds the communication data count, device type and first device
number for each external instrument station number in manual mode.
(Table Appx. 1)*1
Refresh station
designation CPU1
Performs refresh communication for stations whose bit is set to 1.
(1 bit per station, total 32 stations) (Figure 4.1) *1
Refresh station
designation CPU2
Used for communication when the external instrument has two CPUs.
(It is normally set to 0). (Figure 4.1) *1
Reserved
Refresh communication
data area
Holds the read/write data in refresh communication.
User programs read or write this data. (Table Appx. 2) *1
External instrument
status data area
Holds the detailed error codes for each station of the external
*1
instrument. (Figure 9.2)
Command register
command area
Area for writing the command in command communication. (Figures
*1
7.4 to 7.8)
Command register
response area
Stores data and error response received from the external instrument
*1
during command communication. (Figures 7.9 to 7.10)
*1: Details are given in the table or figure indicated within parenthesis.
*2: When accessing a data register from a BASIC program, access the data position number by subtracting 50 from the
data position number given in table 3.2.
CAUTION
Note the following when accessing data registers from BASIC programs.
Registers of the UT Link Module are classified into mode registers and data registers.
When accessing data registers from a BASIC program, access data position numbers
obtained by subtracting 50 from the data position numbers given in Table 3.2, “Register
Configuration of the UT Link Module”.
For mode registers, access the data position numbers as given in Table 3.2.
Data position numbers given henceforth should be handled similarly.
IM 34M6H25-01E
3-5
T Slot Number
Input/output relays of the UT Link Module are identified using relay symbols (X, Y), slot
numbers and relay numbers.
Example: XVVVnn VVV: slot number,
nn: relay number
Registers of the UT Link Module are identified using slot numbers and data position
numbers.
Example:
READ
sl
n1
d
k
sl
: Slot number of the module (3 digits)
n1
d
k
: First data position to read
: First device number for storing data read
: Transfer data count
The slot number indicates the slot position where the module is installed.
It is a 3-digit integer defined as follows.
Slot number
VVV
Slot position, counting from the right of the
power supply module towards the right end of
the base module: 01 to 16
Unit number
Main unit: 0
Sub unit : 1 to 7
IM 34M6H25-01E
3-6
T Signal Path
The UT Link Module transmits signals between the user program and external
instruments via the following signal paths.
External Instrument
FA-M3
CPU Module
UT Link Module
User program
Firmware
Firmware
D registers
Output relays
Request to
refresh
Input relays
Refreshing
I/O relays
Write
instruction
Read
instruction
Write data
Configuration
info. data
Read data
RS-422-A/
RS-485
communication
Refresh
communication
data area
External
instrument
status data area
Command
register
command area
Command
register
response area
Figure 3.2 Signal Path for the Refresh Operation
External Instrument
FA-M3
CPU Module
UT Link Module
User program
Output relays
Input relays
Write
instruction
Read
instruction
Request to
transmit command
Receive
response completed
Write data
Read data
RS-422-A
/RS-485
communication
Firmware
Firmware
I/O relays
D registers
Configuration
info. data
Refresh
communication
data area
External
instrument
status data area
Command
register
command area
Command
register
response area
Figure 3.3 Signal Path for Command Communication
IM 34M6H25-01E
3-7
3.3 Sample D Register Map of an External
Instrument
The following example shows the D register map of the Green Series Controller
(UT350/UT320) manufactured by Yokogawa M&C Corporation.
The D register map of an external instrument varies with the instrument model and its
contents may be modified.
When creating a user program, check with the manufacturer of the external instrument
on the contents of the D register map and the signals.
Table 3.3 Sample D Register Map for an External Instrument
PROCESS
PROGRAM
MODE/PAR
No.
+0
+100
+200
1
ADERROR
2
ERROR
3
PV
4
CSP
5
OUT
6
HOUT
7
COUT
8
Omitted
hereafter
SPNO
MOD
Omitted hereafter
Indicates read-only
items
CAUTION
IM 34M6H25-01E
Blank Page
4-1
4.
Refresh Station Designation in
Automatic Mode and Manual Mode
The UT Link Module can be connected to up to 32 stations of external instruments
(This may be further constrained by the specifications of the external instruments).
It has registers (Refresh Station Designation CPU1/CPU2 register, data position
numbers 563 to 566 *1) for defining which parts of these 32 stations are to be refreshed
during refresh communication.
Set the bits for stations to be refreshed to 1 in the Refresh Station Designation register.
Stations with bit information 0 are not accessed.
-
-
In automatic mode, it is recommended that you perform refresh station designation
even though the module is designed to allow communication to start even if refresh
station designation is not performed.
In manual mode, communication is not allowed if refresh station designation is not
performed.
In command communication, communication is allowed regardless of the setup of
the Refresh Station Designation register.
The Refresh Station Designation register for CPU2 is used when the external instrument
has two CPUs. Most external instruments, however, has only CPU1. Here, we assume
that the Refresh Station Designation register for CPU2 is set to all zeroes. The following
sections explain how the Refresh Station Designation register works.
*1: See Figure 4.1, “Refresh Station Designation Register”.
4.1
When Refresh Station Designation is Not
Performed in Automatic Mode
Initial Check
At power on, the bit information for all 32 stations in the Refresh Station Designation
register is automatically set to 1. Subsequently, each station, regardless of whether an
external instrument is connected, is polled in turn. Time out occurs if no response is
received from an unconnected station after approximately 100 ms. After polling has
completed for all 32 stations, refresh communication begins.
If refresh communication begins with only one external instrument connected, there is a
total time out delay for 31 stations (approximately 3100 ms).
To avoid this time out delay, perform refresh station designation.
Subsequent Check
Even though there is no response from an external instrument, which is switched off, the
external instrument may subsequently become accessible once its power is switched
on. To check for this, the UT Link Module polls each unconnected station in turn during
each refresh communication. As a result, each unconnected station will cause a time
out delay of approximately 100 ms during each refresh communication.
To avoid this time out delay, perform refresh station designation.
IM 34M6H25-01E
4-2
4.2
Refresh Station Designation
In manual mode, all bits of the Refresh Station Designation register are automatically set
to 0 at power on. Therefore, communication in manual mode cannot proceed if refresh
station designation is not performed.
In automatic mode, specifying the refresh stations avoid time out delays (delay*1 at
communication start and delay*2 at each refresh communication) caused by
unconnected stations.
*1:
*2:
approximately 100 ms × the number of unconnected stations
approximately 100 ms
Corresponding station number
(1=refresh, 0=do not refresh)
Data position
number
563
564
565
566
MSB
LSB
Refresh station designation CPU1 (01-16)
16 15 14 13 12 11 10 09 08 07 06 05 04 03 02 01
32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17
Set these two words to zero as they are normally not used.
Figure 4.1 Refresh Station Designation Register
z Converting refresh station designation information to hexadecimal
To convert the refresh station designation information into a hexadecimal number, first,
divide the 16 bits into 4-bit segments. Overlay the bits with the numbers 8, 4, 2 and 1,
starting from the most significant bit position, as shown in Figure 4.2. Multiply the
overlay numbers with the 1-bit positions and add the results. Append a ‘$’ sign at the
beginning of the sum.
MSB
Bit overlay →
Bit state →
0
0
1
0
↓
↓
↓
↓
×
×
×
×
8
0
4
0
2
1
↓ ↓ ↓
1
If the sum is 10 or more,
represent it with letters A to F.
(10=A, 11=B, 12=C, 13=D, 14=E, 15=F)
0
↓
0 + 0 + 2 + 0 → $2
Figure 4.2 Converting Refresh Station Designation Information to Hexadecimal
IM 34M6H25-01E
4-3
z Example of refresh station designation
Example: where stations 01 to 04 and 06 of CPU1 are to be refreshed
Corresponding station number
Data position
number
563
MSB
16 15
0
0
14
13
12
11
10
09
08
07
06
05
04
03
02
LSB
01
0
0
0
0
0
0
0
0
1
0
1
1
1
1
$0
$0
$2
$F
$002F → $2F
Data position
number
564
MSB
32 31
0
0
30
29
28
27
26
25
24
23
22
21
20
19
18
LSB
17
0
0
0
0
0
0
0
0
0
0
0
0
0
0
$0
$0
$0
$0
$0000 → $0
Figure 4.3 Example for Converting Refresh Station Designation Information to Hexadecimal
Table 4.1 Signal Name Assignment Table
Signal Name
ONEpls
LCslot
Address
M00035
D00033
I/O Comments
ON for 1 scan at operation start
LC51 slot
* Example of refresh stations designation
(Normally executed during power-on processing) * file: KYOKUSET
Set slot location
where UT51 is
installed.
Set station
numbers 01 to 16
Set station
numbers 17 to 32
Set CPU2 data
areas to 0
Set CPU2 data
areas to 0
Table 4.4
Sample Program for Specifying Refresh Stations
CAUTION
Any attempt to specify refresh stations during refresh communication will be ignored.
Stop refresh communication before changing the refresh stations. To stop refresh
communication, turn off the Request to Refresh relay (YVVV36).
If the refresh stations are specified during power-on processing, the above consideration
does not apply.
Tip
To monitor the communication status of each station number, use the information in the Remote Station
*1
Status storage area .
*1: See Figure 9.2, “Remote Station Status Register Configuration”.
IM 34M6H25-01E
Blank Page
5-1
5.
Details of Automatic Mode
5.1
Startup Procedure
The startup procedure for automatic mode is given below.
See Also:
Setup conditions for
communication with the
external instrument. The
external instrument should
be setup with the same set
of conditions.
Setup communication conditions
2.8 Attaching and Detaching
Modules
Install module to base module
Connect to external instruments
Designate
refresh stations?
2.7 Setting Communication
Conditions
2.6 Connecting to External
Instruments
NO
It is recommended that refresh
station designation be performed.
YES
See sample programs for details
on the following steps.
Designate refresh stations
Turn on Request to Refresh relay
YVVV36
4.2 Refresh Station Designation
5.4 Sample Programs
Read data
Communication
error?
NO
YES
Replace
read data
Replace with data that
identifies an error.
Figure 5.1 Startup Procedure for Automatic Mode
IM 34M6H25-01E
5-2
5.2
Input/Output Relays Used in Automatic Mode
To start communication in automatic mode, turn on the Request to Refresh relay
(YVVV36). When this relay is on, the UT Link Module performs refresh operation of
the external instruments.
During the refresh operation, the Refreshing relay (XVVV04) turns on.
Access the Request to Refresh relay (YVVV36) and Refreshing relay (XVVV04)
using a FA-M3 user program (ladder sequence or BASIC program).
Other I/O relays that can be used in automatic mode include relays for managing error
information. A complete list of the relays is given in Table 5.1. For error handling,
see Chapter 9, “Errors and Troubleshooting".
Table 5.1 Input/Output Relays Used in Automatic Mode
I/O Relay
Number
Signal Name
XVVV04
Refreshing
XVVV05
Clear remote station
status register
completed
XVVV06
Refresh
communication error
XVVV07
Module error
YVVV36
Request to refresh
YVVV37
status register
XVVV38
Clear refresh
communication error
relay
Description
Relation to Other Relays
Turns on when the refresh
operation is started by turning
on YVVV36 (Refresh
request). It remains on during
the refresh operation.
Turns on when clearing of the
error information (stations
where error has occurred, error
details code) for remote
stations, started by turning on
YVVV37, is completed
Turns on when communication
error occurs in automatic mode
or manual mode.
Turns on when module error
occurs (when there is an error
in module setting).
Turning on this relay performs
refresh communication.
Turning off this relay stops
Turning on this relay clears the
error information (stations
where error has occurred and
error details code) of the
Remote Station Status register
and XVVV06 (Refresh
Communication Error relay).
Turning on this relay clears
only XVVV06 (Refresh
The error Information (station
where error has occurred, error
details code) remains
unchanged.
Turning off YVVV36 stops
the refresh operation and
turns off XVVV04.
Turning off YVVV37 turns
off XVVV05.
Turning on either YVVV37
or YVVV38 turns off
XVVV06.
Turning off YVVV36 turns
off XVVV07.
When XVVV07 is turned
on, turn off YVVV36 after
checking the error
information.
Turn off YVVV37 after
confirming that XVVV05
has turned on.
has turned on.
*: Replace VVV with the slot number where the UT Link Module is installed.
CAUTION
communication to a station after its status bit in the Remote Station Status storage area
(data position numbers: 3839, 3840*1) has turned on. Starting command communication
before the refresh station initial check*2 for a station has been completed in automatic mode
will disallow subsequent automatic mode communication to the station.
*1: For details, see Figure 9.2, “Remote Station Status Register Configuration”.
IM 34M6H25-01E
5-3
z Operation of the input/output relays
I/O relays
XVVV04
Refreshing
ON
Communication interrupted
over all stations
Key:
User program processing
UT Link Module internal processing
Communication
in progress
OFF
XVVV05
register completed
XVVV06
Refresh
communication error
XVVV07
Module error
YVVV36
Request to refresh
YVVV37
status register
YVVV38
Clear refresh
communication error relay
time
Normal
communication
Module
error
Refresh
communication
error
Clear remote
station status
register
Figure 5.2 Operation of Input/Output Relays in Automatic Mode
IM 34M6H25-01E
5-4
5.3
Reading and Writing Data in Automatic Mode
Data for automatic mode are stored in the Refresh Communication Data Area (data
position numbers 571 to 3770)*1 of the UT Link Module.
The Refresh Communication Data Area holds data for 32 stations (a total of 3200
registers) with 25 CPU1 read data areas, 25 CPU1 write data areas and similarly,
25+25 CPU2 areas per station.
The content of the stored data depends on the instrument type of the connected external
instrument. For example, if an external instrument with readable registers D1 to D8 is
connected to station 1 in automatic mode, when refresh communication starts, data will
be read and stored in the read area data position numbers 571 to 578 in the Refresh
Communication Data Area. A user program can obtain the data of the external
instrument by reading any part of the data in data position numbers 571 to 578.
When there is data to be written to the external instrument and assuming that the
instrument is connected as station 1, data can be transmitted to the external instrument
by writing the required data to the write area of the Refresh Communication Data Area,
starting from position number 596 using a user program.
The Refresh Communication Data Area for CPU2 is used when the external instrument
has two CPUs. Most external instruments, however, have only one CPU. Accessing an
external instrument with two CPUs is the same as accessing an external instrument with
one CPU, except for the difference in the data position numbers.
*1: Table 5.2 shows an example. See Table Appx. 2, “Refresh Communication Data Area” for a complete map of the
storage area.
Table 5.2 Refresh Communication Data Area Example
Station
Number
1
2
3
:
32
*:
Data Position Numbers for CPU1
Read Area
Write Area
Read Area
Write Area
571 to 595
671 to 695
771 to 795
596 to 620
696 to 720
796 to 820
621 to 645
721 to 745
821 to 845
646 to 670
746 to 770
846 to 870
3671 to 3695
3696 to 3720
3721 to 3745
3746 to 3770
Numbers in the table represent data position numbers of the UT Link Module.
IM 34M6H25-01E
5-5
Sample Program
This section describes a sample program that is created with the following conditions.
-
-
Specify refresh stations.
: Stations 1 and 2
Slot number where the UT Link Module is installed : 5
External instrument for station 1
: Reads D1 to D8 every second *1
External instrument for station 2
: Reads D1 to D9 every second *1
On communication error
: Sets read data for the error station to –99.
Automatically restarts communication if system recovers from the communication
error.
(Determine the error using Remote Station Status register*2)
If a module error occurs, check the program.
Signal name assignments are as shown in Table 5.3.
*1: The user program reads the refresh communication data area of the UT Link Module every second.
The external instrument and UT Link Module communicates asynchronously to the user program.
Slot position
1
2
3
4
5
6
Power
5.4
UT Link Module
Station
number
1
Station
number
2
Communication items: D1 to D8
D1 to D9
Figure 5.3 System Configuration Diagram
CAUTION
Remember to switch to automatic mode*1.
*1: See Figure 2.9., “Data Format Switch Setting”.
IM 34M6H25-01E
5-6
Signal
Name
RefReq
Address
I/O Comments
Y00536
Request to refresh
I00049
I00050
Remote station status 01
ONEpls
Sec1
M00035
M00040
On for 1 scan at operation start
1-second clock
LCslot
Data10 *2
Data20 *2
D00033
D00049
D00065
LC51 slot
First data for station 1
stats01
stats02
*1
*1: 16 bits starting from stats01 are used for reading the status of stations 1 to 16 and hence cannot be used for other
purposes.
*2: 8 words starting from Data10 and 9 words starting from Data20 are used for reading data and hence cannot be used for
other purposes.
Tip
The sample program is coded using signal names assigned to devices. Although the program can be
coded using only device names, using signal names improves program readability and maintainability.
IM 34M6H25-01E
5-7
** Sample Program for Automatic Mode **
* Designate refresh station (stations 1and 2) *
Set slot position
where UT51 is
installed
Set stations
01 to 16
Set stations
17 to 32
Set CPU2
data areas to 0
Set CPU2
data areas to 0
Request to
refresh
* Read remote station status and data *
Remote station
status
Read station 01
Read station 02
* On communication error, set data to -99 *
Station 01
Station 02
Figure 5.4 Sample Program for Automatic Mode
Tip
- In the sample program, data for station 1 is stored in eight contiguous words starting from signal name
Data10 (device: D00049). Similarly, data for station 2 is stored in nine words starting from Data20.
- Purpose of the timer: During communication to multiple stations, when communication to a station is
interrupted and subsequently restored, the status of the other stations communicating normally may
become 0 for an instantaneous moment. When monitoring the communication status, communication
is considered interrupted if the status maintains a value of 0 for about 10 seconds. After downloading
the program, switch off and then switch on the power supply to the FA-M3 before use.
IM 34M6H25-01E
Blank Page
6-1
6.
Details of Manual Mode
When performing refresh communication of the UT Link Module and the external
instruments in manual mode, the information that can be refreshed are all the registers
of the external instruments that allows refreshing. The user specifies which registers,
among these, can be refreshed. To actually perform refresh communication of the data
in the external instruments, the user manually:
-
selects the external instruments to be refreshed and
specifies the first register and the number of registers of each external instrument to
be refreshed
This manual selection of the devices of the external instrument to be refreshed is known
as configuration.
When compared to the automatic mode, the manual mode allows shortening of the
refresh time by selecting only the registers that require refreshing.
CAUTION
Manual mode cannot operate until refresh station designation has been performed.
For details on how to specify the refresh stations, see Section 4.2, “Refresh Station
Designation”.
IM 34M6H25-01E
6-2
6.1
Startup Procedure
The startup procedure in manual mode is given below.
See Also:
Set up conditions for
external instrument should be
set up with the same set of
conditions.
Modules
Instruments
4.2 Refresh Station Designation
NO
Set up mode
registers?
Conditions
YES
When using the communication
conditions defined by the switch
setting on the side of the module,
there is no need to set up the
mode registers.
6.3 Setting Mode Registers
(Communication Conditions)
Set up mode registers
6.4 Configuration Setup
(Communication range)
Set up configuration
See the sample program for
details on the following steps.
Turn on Request to Refresh relay
YVVV36
6.6 Sample Program
Read data
Write data
Communication
error?
NO
Figure 6.1
YES
Replace
read data
Startup Procedure for Manual Mode
IM 34M6H25-01E
6-3
6.2
Input/Output Relays Used in Manual Mode
To start communication in manual mode, perform configuration setup, refresh station
designation and then turn on the Request to Refresh relay (YVVV36). When this relay
is on, the UT Link Module performs refresh operation of the external instruments.
During the refresh operation, the Refreshing relay (XVVV04) turns on.
Access the Request to Refresh relay (YVVV36) and Refreshing relay (XVVV04) using
a FA-M3 user program (ladder sequence or BASIC program).
Other I/O relays that can be used in manual mode include relays for managing error
information and relays for reading the configuration information. A complete list of the
relays is given in Table 6.1. For error handling, see Chapter 9, “Errors and
Troubleshooting".
Table 6.1 Input/Output Relays used in Manual Mode
I/O Relay
Number
Signal Name
XVVV01
Set mode register
completed
XVVV02
Read configuration
completed
XVVV04
Refreshing
XVVV05
status register
completed
XVVV06
Refresh communication
error
XVVV07
Module error
YVVV33
Request to set mode
register
YVVV34
Request to read
configuration
YVVV36
Request to refresh
YVVV37
status register
XVVV38
Clear refresh
communication error
relay
Relation to Other
Relays
Description
Turns on when setting of the
contents written in the mode
register to this module is
completed.
Turns on when the read
configuration operation is
completed.
Turns on when the refresh
operation is started by turning on
YVVV36 (Request to refresh).
It remains on during the refresh
operation.
Turns on when clearing of the error
information (stations where error
has occurred, error details code) for
remote stations, started by turning
on YVVV37, is completed
Turns on when communication
error occurs in automatic mode or
manual mode.
Turns on when module error
occurs (when there is an error in
module setting).
Turning on this relay sets the
internal parameters of this module
according to the contents of the
mode registers.
Turning on this relay starts a
request to read the configuration
information.
Turning on this relay performs
Turning off this relay stops refresh
communication.
Turning on this relay clears the
error information (stations where
error has occurred and error
details code) of the Remote
Station Status register and the
XVVV06 (Refresh
Turning on this relay clears only
XVVV06 (refresh communication
error relay). The error Information
(station where error has occurred,
error detailed code) remains
unchanged.
Turning off YVVV33
turns off XVVV01.
Turning off YVVV34
turns off XVVV02.
Turning off YVVV36
stops the refresh
operation and turns off
XVVV04.
Turning off YVVV37
turns off XVVV05.
Turning on either
YVVV37 or YVVV38
turns off XVVV06.
Turning off YVVV33 or
YVVV34 or YVVV36
turns off XVVV07.
Turn off YVVV33 only
after checking that
XVVV01 or XVVV07
has turned on.
Turn off YVVV34 only
after checking that
XVVV02 or XVVV07
has turned on.
When XVVV07 is turned
on, turn off YVVV36
after checking the error
information.
has turned on.
has turned on.
*: Replace VVV with the slot number where the UT Link Module is installed.
IM 34M6H25-01E
6-4
z Operation of the input/output relays
I/O relays
Key:
User program processing
UT Link Module internal processing
XVVV01
Setup mode register
completed
XVVV04
Refreshing
ON
Communication interrupted
over all stations
Communication
in progress
OFF
XVVV05
status register
completed
XVVV06
Refresh
communication error
XVVV07
Module error
YVVV33
Request to set up
mode register
YVVV34
Request to read
configuration
YVVV36
Request to refresh
YVVV37
status register
YVVV38
Clear refresh
communication error relay
time
Normal
communication
Module
error
Refresh
communication
error
Clear remote
station status
register
Set up
mode registers
YVVV02
Read configuration
completed
YVVV34
Request to read
configuration
time
Read configuration
Figure 6.2 Operation of Input/Output Relays in Manual Mode
IM 34M6H25-01E
6-5
When the communication conditions are set using the switches on the side of the
module and the module is used with these conditions unchanged, it is not necessary to
set the mode registers and you may skip this section.
However the following setup can only be done using mode registers.
- Response waiting time
This is the timer value for monitoring a response from an external instrument
during refresh communication.
- Number of communications retries
The communication conditions such as the transmission speed is read from the
positions of the DIP switches on the side of the module and written to the mode registers
when power to the module is switched on. A user program can check and change the
current communication conditions by reading and writing to the mode registers. Writing
to a mode register from a user program overwrites the current value. When changing a
mode register value, write your user program so that it checks that the Set Mode
Register Completed relay (XVVV01)*1 has turned on after changing the mode register,
before starting communication.
See Table 6.2, “List of Mode Registers” for more details.
*1: See Table 6.1, “Input/Output Relays Used in Manual Mode”.
CAUTION
Writing to mode registers is allowed in manual mode and command communication.
Writing to mode registers in automatic mode is ignored.
Table 6.2 List of Mode Registers
Data
position
number
Type*1
1
R/W
2
3
4
5
6
R/W
R/W
R/W
R/W
R/W
7
R/W
8
R/W
31
R
32
R
33
R
Initial
value
Description
Transmission speed
(bps)
Data length
Parity
Stop bit length
Checksum
Ending character
Response waiting
time*3
Number of
communication
retries
Module error details
EC1*4
Module error details
EC2*4
Automatic mode /
manual mode
0: 300
3: 2400
6: 19200
0: 7 bits
0: none
0: 1 bit
0: no
0: none
1: 600
4: 4800
7: 31250
1: 8 bits
1: odd
1: 2 bits
1: yes
1: CR($OD)
2: 1200
5: 9600
8: 38400
*2
2: even
*2
*2
*2
*2
10 to 32760 (ms)
0 to 255
(times)
*2
5000
0: No retry
15
Error code 1
15
Error code 2
(EC1)
(EC2)
3
0

0

0: manual mode 1: automatic mode
*2
*1: R/W: Both Read/Write are allowed, R: Read only
*2: The initial values are obtained from the hardware switch setting.
*3: Monitors the refresh time.
As the time required for refreshing vary with every external instrument, set the value to accommodate the external
instrument which has the longest internal processing time among all the external instruments to be refreshed.
*4: See “Module Error Details Information” in Table 9.2.
IM 34M6H25-01E
6-6
T Sample Program
To change the number of communication retries, write the new value to mode register
data position 8. Figure 6.3 shows a sample program for changing the number of retries
from the initial value of 3 to 2, with signal names as defined in Figure 6.3, “Signal Name
Assignment Table”.
If a module error occurs, check the program.
The program assumes that the UT Link Module is installed in slot 5.
Signal
Name
ModeStE
ModuErr
ModeSet
ONEpls
LCslot
Address
X00501
X00507
Y00533
M00035
D00033
I/O Comments
Set mode register completed *1
Module error
Request to set mode register *1
LC51 slot
*1: See Table 6.1, “Input/Output Relays Used in Manual Mode”.
* Changing communication retries to 2
(Normally executed during power-on processing) * file: RETRY
Set slot location
where UT51 is
installed.
Number of retries
Request to set
mode register
* Set mode register completed
Reset request to
set mode register
Figure 6.3 Sample Program for Changing the Number of Retries
Tip
The sample program is coded using signal names assigned to devices. Although the program can be
coded using only device names, using signal names improves program readability and maintainability.
IM 34M6H25-01E
6-7
6.4
Configuration Setup (Communication Range)
Configuration setup in manual mode defines the reading/writing range for external
instruments and the access targets of external instruments (D registers or I relays *2) in
the Configuration Data Area*1 of the UT Link Module using a user program.
*1: See Table Appx. 1, “Configuration Data Area”.
*2: Although the I relays of external instruments are also accessible, their content is almost the same as the D registers.
Therefore, the following explanation shall assume that access is to the D registers.
Defining the reading and writing range of external instruments is known as configuration
setup.
In configuration setup, the following information is defined for each external instrument.
T Setting the Configuration Data Area
-
-
-
Data Count
Defines the number of read or write data starting from the first device number of the
external instrument.
Device Type
Specifies the target device type of the external instrument for reading or writing.
Specify $4 for D registers of the external instrument and $9 for I relays of the
external instrument. (Table 6.4)
First Device Number
Specifies the device number (without the prefix symbol D or I) of the first device of
the external instrument to read or write.
The setting area consists of 2 words, but the lower order number should always be
set to 0.
Table 6.4 Numeric Values for Setting the “Device Type” in the Configuration Data Area
Access Target
Value
D register
I relay
$4
$9
Remarks
Normally, D registers are accessed.
CAUTION
-
Up to 25 contiguous devices can be read or write per station in manual mode.
Specifying non-contiguous device numbers is not allowed.
To access more than 25 devices in the external instrument, access devices with low
access frequencies using command communication. For details on command
communication, see Chapter 7, “Details of Command Communication”.
IM 34M6H25-01E
6-8
The configuration data area*1 contains data for 32 stations. The area for each station
contains data for 2 CPUs; each CPU area is further divided into a setup area for reading
and a setup area for writing. Table 6.5 shows an example of a configuration data area.
The configuration data area for CPU2 is used only if the external instrument has 2
CPUs. Most external instruments, however, has only CPU1. Therefore, the following
description shall assume that no setup is performed for the CPU2 area.
*1: See Table Appx. 1, “Configuration Data Area”.
Station
Number
Table 6.5 Configuration Data Area Example
1
2
:
32
Setup Area for Reading
Setup Area for Writing
Data Device First Device Data Device First Device
Count Type
Number
Count Type
Number
51
52
53-54
55
56
57-58
67
68
69-70
71
72
73-74
547
548
549-550
551
552
553-554
Data Device First Device Data Device First Device
Count Type
Number
Count Type
Number
59
60
61-62
63
64
65-66
75
76
77-78
79
80
81-82
555
556
559
557-558
560
561-562
*: Numbers in the table represent UT Link Module data position numbers.
T Configuration Data Setup Example
An example setup for reading two D registers with numbers D2 and D3*1 and writing one
D register with number D215*2 is shown below.
*1: If the external instrument is a Green Series Controller UT350/UT320 manufactured by Yokogawa M&C Corporation, D2
and D3 are the ERROR and PV.
*2: If the external instrument is a Green Series Controller UT350/UT320 manufactured by Yokogawa M&C Corporation,
D215 is the CRSP.
Table 6.6 Configuration Data Area Setup Example
Station
Number
1
Example
preset
value
*1:
*2:
*3:
*4:
*5:
Data
Count
51
2
*1
Device
Data
Device
First Device Number
First Device Number
Type
Count
Type
52
53
to
54
55
56
57
to
58
$4
*2
Always
0
2
*3
1
*4
$4
*2
Always
0
215
*5
Two data items to read: D2 and D3
$4 for reading D registers ($9 for reading relays).
Value is 2 since the first device number to read is D2.
One data item to write: D215
Value is 215 since the first device number to write is D215.
IM 34M6H25-01E
6-9
T Sample Program
The following sample program illustrates Table 6.6, “Configuration Data Area Setup
Example” . Normally, configuration setup is performed only once during power-on
processing.
Signal
Name
ONEpls
LCslot
Address
M00035
D00033
I/O Comments
On for 1 scan at start of operation
LC51 slot
** Sample Program to Setup Configuration (Manual Mode) **
* Set up read area for station 1 *
Read data
count is 2
Specify D
register
Always 0
Start reading
from D2
* Set up write area for station 1 *
Write data
count is 1
Specify D
register
Always 0
Start writing
from D215
Figure 6.4 Sample Program for Configuration Setup
Tip
You can also read the current configuration information. Turn on the Request to Read Configuration
relay (YVVV34) described in Table 6.1, “Input/Output Relays Used in Manual Mode”. When the Read
Configuration Completed relay (XVVV02) turns on, the data read is stored in the configuration data
area.
IM 34M6H25-01E
6-10
6.5
Reading and Writing Data in Manual Mode
In manual mode, data is stored in the Refresh Communication Data Area (data position
numbers 571 to 3770)*1 of the UT Link Module (in the same area as in automatic mode).
The Refresh Communication Data Area holds data for 32 stations (a total of 3200
registers) with 25 CPU1 read data areas, 25 CPU1 write data areas and similarly, 25+25
CPU2 areas per station.
The content of the stored data depends on the configuration data.
For example, in Table 6.6, “Configuration Data Area Setup Example”, we set up the
configuration for station 1 to read registers D2 and D3 and write to D215 of the external
instrument in station 1 in manual mode. When refresh communication starts, data that is
read is stored into read area data position numbers 571 and 572 in the Refresh
Communication Data Area. Data written by the user program in write area data position
number 596 is written to D215 of the external instrument.
The user program can obtain the data of the external instrument by reading data
position numbers 571 and 572.
The Refresh Communication Data Area for CPU2 is used when the external instrument
has two CPUs. Most external instruments, however, have only one CPU. Accessing an
external instrument with two CPUs is the same as accessing an external instrument with
one CPU, except for differences in the position data numbers.
*1: Table 6.8 shows an example. See Table Appx. 2, “Refresh Communication Data Area” for a complete map of the
storage area.
Table 6.8 Refresh Communication Data Area Example
Station
number
1
2
3
:
32
*:
Read Area
Write Area
571 to 595
596 to 620
671 to 695
696 to 720
771 to 795
796 to 820
3671 to 3695
3696 to 3720
Read Area
Write Area
621 to 645
646 to 670
721 to 745
746 to 770
821 to 845
846 to 870
3721 to 3745
3746 to 3770
Numbers in the table represent UT Link Module data position numbers.
IM 34M6H25-01E
6-11
Sample Program
This section describes a sample program that is created with the following conditions.
-
: Station 1
Slot number where the UT Link Module is installed: 5
Communication conditions unchanged from the setting of the DIP switches on the
side of the module.
- Read data of external instrument at station 1
: Reads D2 and D3 every second*1
- Write data to external instrument at station 1
: Write data to D215 every second*1
- On communication error
: Sets read data to –99.
Restart communication automatically if system recovers from a communication error
(As there is only one communication station, determine the error from the Refresh
Communication Error*2 relay.
- If a module error occurs, check the program.
- Ladder signal name assignments are as shown in Table 6.9.
*1: The user program reads and writes to the refresh communication data area of the UT Link Module every second.
The external instrument and UT Link Module communicate asynchronously to the user program.
Slot position → 1
2
3
4
5
6
Power
6.6
UT Link Module
Station
1
Communication items: D1, D2 read
D215 write
Figure 6.5 System Configuration Diagram
CAUTION
Remember to switch to manual mode*1.
*1: See Figure 2.9, “Data Format Switch Setting”.
IM 34M6H25-01E
6-12
T Ladder Program
Signal
Name
Refsh
RefReq
ONEpls
Sec1
LCslot
Data10 *1
Data30
Address
I/O Comments
X00504
Y00536
M00035
M00040
D00033
D00049
D00081
Refreshing
Request to refresh
1-second clock
LC51 slot
First write data for station 1
*1: 2 words starting from Data10 are used for reading data and hence cannot be used for other purposes.
** Sample Program for Manual Mode **
* Specify refresh station (station 1only) *
Set slot position
where UT51 is
installed
Set stations
01 to 16
Set stations
17 to 32
Set CPU2
data areas to 0
Set CPU2
data areas to 0
* Setup configuration (manual mode) *
* Set up read area for station 1 *
Read data
count is 2
Specify D
register
Always 0
Start reading
from D2
Figure 6.6 Sample Program for Manual Mode (1/2)
IM 34M6H25-01E
6-13
* Set up write area for station 1 *
Write data
count is 1
Specify D
register
Always 0
Start writing
from D215
Request to
refresh
Write data
* Read and write data *
Read
station 01
Write
station 01
* On communication error, set data to -99 *
Station 01
Figure 6.7 Sample Program for Manual Mode (2/2)
Tip
- In the sample program, data for station 1 (D2, D3) is stored in 2 contiguous words starting from
signal name Data10 (device D00049). Data stored in Data30 (device D00081) is transmitted to
station 1 and written to D215 of the external instrument.
- When connecting multiple stations, it is necessary to determine when communication error has
occurred using the Remote Station Status register. See Section 5.4, “Sample Program” in the
chapter on automatic mode for details.
IM 34M6H25-01E
6-14
T YM-BASIC/FA Sample Program
1000 ! *******************************************************
1010 !
Manual Mode Sample Program
file:LC51smpl.sa
1020 ! *******************************************************
1030 !
1040 ! ************************************
1050 !
Declarations
1060 ! ************************************
1070 DEFINT I,L,S
:! Integer type declaration
1080 OPTION BASE 1
1090 DIM ISET(12),IDATA10(2),IDATA30(1)
:! Array declaration
1100 SL = 5
:! Slot position
1110 ASSIGN LC51= SL
:! Module declaration
1120 !
1130 ! ************************************
1140 !
Specify refresh stations (station 1 only)
1150 ! ************************************
1160 ISET(1) = $1
:! Set stations 01 to 16
1170 ISET(2) = 0
:! Set stations 17 to 32
1180 ISET(3) = 0
:! Set CPU2 side to 0.
1190 ISET(4) = 0
:! Set CPU2 side to 0.
1200 !
1210 ! ************************************
1220 !
Configuration setup
1230 !
Set up station 1 read area
1240 ! ************************************
1250 ISET(5) = 2
:! Set read data count to 2
1260 ISET(6) = $4
:! Specify type as D register
1270 ISET(7) = 0
:! Always 0
1280 ISET(8) = 2
:! First D2
1290 !
1300 ! ************************************
1310 !
Set up station 1 write area
1320 ! ************************************
1330 ISET(9) = 1
:! Set write data count to 1
1340 ISET(10)= $4
:! Specify type as D register
1350 ISET(11)= 0
:! Always 0
1360 ISET(12)= 215
:! First D215
1370 !
1380 IDATA30(1)=400
:! Write data
1390 !
1400 ! ************************************
1410 !
Write to data register
1420 ! ************************************
1430 ! *** Specify refresh stations ***
1440 FOR IREG = 563 TO 566
1450
OUTPUT SL,(IREG - 50) NOFORMAT;ISET(IREG - 562)
1460 NEXT IREG
1470 !
IM 34M6H25-01E
6-15
1480 ! *** Station 1 configuration area ***
1490 FOR IREG = 51 TO 58
1500
OUTPUT SL,(IREG - 50) NOFORMAT;ISET(IREG - 46)
1510 NEXT IREG
1520 !
1530 IDAT = 101
:! Data position
1540 CONTROL SL,IDAT;$8,$8
:! Turn on Request to Refresh relay
1550 !
1560 ! ************************************
1570 !
Timer interrupt declaration, MAIN
1580 ! ************************************
1590 ON TIMER #1,1000 GOSUB DATRD@
1600 !
1610 ! *** MAIN ***
1620 WHILE ISTOP = 0
1630
WAIT
1640 END WHILE
1650 !
1660 STOP
1670 !
1680 ! ************************************
1690 DATRD@
! Read and write data
1700 ! ************************************
1710 STATUS SL,IDAT;IRELAY
1720 IREFSH
= BINAND(IRELAY,$8)
:! Refreshing
1730 IREFERR
= BINAND(IRELAY,$20)
:! Refresh communication error
1740 IMODUERR = BINAND(IRELAY,$40)
:! Module error
1750 !
1760 IF IREFSH THEN
1770
ENTER
SL,(571 - 50) NOFORMAT;IDATA10(1)
:! Read station 1, D2
1780
ENTER
SL,(572 - 50) NOFORMAT;IDATA10(2)
:! Read station 1, D3
1790
OUTPUT SL,(596 - 50) NOFORMAT;IDATA30(1)
1800
CONTROL SL,IDAT;$0;$32
:! Write station 1, D215
:! Turn off Clear Refresh
Communication Error Relay
1810 ENDIF
1820 !
1830 ! ***** On error: set to -99 *****
1840 IF IREFERR OR IMODUERR THEN
1850
IDATA10(1) = -99 : IDATA10(2) = -99
1860
!
1870
! *** Clear refresh communication error ***
1880
IF IREFERR THEN
1890
:! Turn on Clear Refresh
Communication Error Relay
1900
ENDIF
1910
!
1920
! *** Stop program on module error ***
1930
IF IMODUERR THEN
1940
:! Turn off Request to Refresh relay
1950
ISTOP = 1
:! Stop program
IM 34M6H25-01E
6-16
1960
ENDIF
1970 ENDIF
1980 !
1990 ! *** For checking the reading operation ***
2000 PRINT "IDATA10(1)=";IDATA10(1);" IDATA10(2)=";IDATA10(2)
2010 !
2020 RETURN
2030 !
2040 END
IM 34M6H25-01E
7-1
7.
Details of Command Communication
In addition to the two regular (refresh operation) communication modes (automatic and
manual modes), the UT Link Module also provides command communication for
communication as and when required. In command communication, the UT Link
Module sends a command to an external instrument and receives a response from the
Command communication can be used even during refresh operations in automatic
mode or manual mode.
In command operation, a user program has to be created to perform the following tasks:
- start communication
- read and write data
- end communication
-
manage errors, etc.
CAUTION
Using command communication during data access in automatic mode or manual mode
will cause a temporary delay in the data access because the data access operation is
temporarily interrupted to execute the command communication.
Frequent command communications of the same content should be implemented as
data access in automatic mode or manual mode instead.
CAUTION
communication after the status bit for the station in the Remote Station Status storage
communication before the refresh station initial check*2 has been completed in automatic
mode will disallow subsequent automatic mode communication to this station.
*1: For details, see Figure 9.2, “Remote Station Status Register Configuration”
IM 34M6H25-01E
7-2
7.1
Startup Procedure
The startup procedure for command communication is given below.
See Also:
Setup conditions for
external instrument should be
setup with the same set of
conditions.
Set up mode registers?
Conditions
Modules
Instruments
NO
YES
When using the communication
conditions defined by the switch
setting on the side of the
module, there is no need to
setup the mode registers.
Set up mode registers.
See the sample program for
details on the following steps.
Create command
7.4 Commands and Responses
7.5 Sample Program
Turn on Request to Transmit
Command relay YVVV35
Turn on Response Receive
Completed relay XVVV03
Turn off Request to Transmit
Command relay YVVV35
Read data
Communication
error?
NO
YES
Replace
read data
End
Figure 7.1 Startup Procedure for Command Communication
IM 34M6H25-01E
7-3
7.2
Input/Output Relays Used in Command
Communication
In command communication, the user creates a command and turns on the Request to
Transmit Command relay (YVVV35). To receive the response, the user checks that
XVVV03 has turned on before reading the data from the response area. Reading the
data requires knowledge of the response formats (Figures 7.9 and 7.10).
Table 7.1 shows a list of the input/output relays used in command communications. For
details on error handling, see Chapter 9, “Errors and Troubleshooting".
Table 7.1
Input/Output Relays used in Command Communication
I/O Relay
Number
Signal Name
XVVV03
Receive response
completed
XVVV07
Module error
XVVV08
Command
communication error
YVVV35
*:
Request to transmit
command
Relation to Other
Relays
Description
Turns on when a normal response
to the transmitted command is
received from the external
instrument and stored in the
response area.
Turns on when a module error
(setup error) occurs.
Turns on when a communication
error occurs during command
communication.
Turning on this relay transmits a
command and performs monitoring
until a response is received.
Turning off YVVV35
turns off XVVV03.
Turning off YVVV35
turns off XVVV07.
Turning off YVVV35
turns off XVVV08.
confirming that one of the
following relays has
turned on: YVVV03,
YVVV07 or YVVV08
Replace VVV with the slot number where the UT Link Module is installed.
z Operation of the Input/Output Relays
I/O Relay
XVVV03
Response receive
completed
ON
Key:
: User program processing
: UT Link Module internal processing
OFF
X
XVVV07
Module error
XVVV07
Command
communication error
XVVV35
Request to transmit
command
time
Normal
communication
Command
communication
error
Module
error
Figure 7.2 Operation of the Input/Output Relays in Command Communication
IM 34M6H25-01E
7-4
7.3
Setting Mode Registers
When the communication conditions are set using the switches on the side of the
module and the module is used with these conditions unchanged, it is not necessary to
set the mode registers and you may skip this section.
However the following setup can only be done using mode registers.
- Response waiting time
This is the timer value for monitoring a response from an external instrument
during refresh communication
- Number of communication retries
If it is required to change the above two parameter values or to read or write
communication parameters such as the transmission speed from a user program, read
Section 6.3, “Setting Mode Registers (Communication Conditions)”.
IM 34M6H25-01E
7-5
7.4
Command and Response
7.4.1 Data Areas Used in Command Communication
The data areas in the UT Link Module that are used in command communication are
called command registers.
The command registers consist of the following 2 areas:
-
Command area: The area where a user program writes the command to an external
instrument.
Response area: The area where a user program reads the response from an
Data position
number
3841
Command area
(100 words)
3940
3941
Response area
(100 words)
4040
Figure 7.3 Command and Response
IM 34M6H25-01E
7-6
7.4.2 Formats of Commands and Responses
Table .7.2, “Commands and Responses” shows a list of command numbers used in the
UT Link Module, together with the function description, command format numbers and
response format numbers. Table 7.3, “Numeric Values for Setting the “Device Type” in
the Response Format” shows device types that can be specified in a command format.
Some commands do not require designation of the device type.
To transmit a command, follow instructions given in Chapter 8, “Accessing the UT Link
Module” using command formats described in this section.
When a command-related parameter error occurs, a module error results, the Module
Error relay (XVVV07) turns on and an error code is stored in the Module Error Details
register at data position numbers 31 and 32 of the mode registers*1. For more
information on error details, see Chapter 9, “Errors and Troubleshooting”.
*1: See Section 6.3, “Setting Mode Registers (Communication Conditions)”.
z Creating a Command
-
-
The command format depends on the command number. Create a command
according to the command format number given in Table 7.2, “Commands and
Responses”. Figures 7.4 to 7.8 show the actual command format for each
command format number.
Set the station number field in the command format to the station number of the
external instrument with a user program (station numbers 1 to 32).
The CPU number field in the command format is normally set to 1. For external
instruments with two CPUs, it may be set to 1 or 2.
Set the command number to the hexadecimal value as given in Table 7.2,
“Commands and Responses” with a user program.
Set the device type to the device type of the external instrument to be accessed.
(Table 7.3).
Set the device number to a register or relay number (without the prefix character,
such as ‘D’ or ‘I’) of the external instrument to be accessed. The device number
area in the command format contains 2 words. The high-order word is reserved for
future expansion and should be set to 0. Specify the device number in the low order
word.
Example: To specify device number $8 using command format C1,
Data position number 3845 (high order word) = $0
Data position number 3846 (low order word) = $8
z Response Format
-
-
There are 2 types of response formats. Figures 7.9 to 7.10 show the actual
response format for each response format number.
When there is an error in the response for a command, an error code is stored in
the response area of the command register. For details on errors, see Chapter 9,
“Errors and Troubleshooting”.
To read a response, follow instructions given in Chapter 8, “Accessing the UT Link
Module”, using response formats described in this section.
IM 34M6H25-01E
7-7
Table 7.2 Commands and Responses
Command
Number
(in hexadecimal)
$01
$02
$04
$05
$06
$07
$11
$12
$14
$15
$16
$17
$51
Description
Bit read
Bit write
Bit random read
Bit random write
Bit monitoring device
designation
Bit monitor
Word read
Word write
Word random read
Word random write
Word monitoring device
designation
Word monitor
Test (Command Return)
Number of
Processing
Points per
Communication
Command
Format
Number
Response
Format Number
1 to 64 bits
1 to 64 bits
1 to 32 bits
1 to 24 bits
C1
C2
C3
C4
R2
R1
R2
R1
1 to 32 bits
C3
R1
1 to 64 words
1 to 64 words
1 to 32 words
1 to 24 words
C5
C1
C2
C3
C4
R2
R2
R1
R2
R1
1 to 32 words
C3
R1
C5
C5
R2
R1
Table 7.3 Numeric Values for Setting the “Device Type” in the Response Format
Access Target
D register
I relay
Value
$4
$9
Remarks
Normally, D registers are accessed.
z Command Format
Data Position
Number
3841
3842
3843
3844
3845
3846
3847
Station number
CPU number
Command number
Device type
$0
Device
number
Number
Number of points to
read
Data Position
Number
3841
3842
3843
3844
3845
3846
3847
3848
Station number
CPU number
Command number
Device type
$0
Device
number
Number
Number of points to
write
Data
3940
Figure 7.4 Command Format: C1
Data Position
Number
3841
3842
3843
3844
3845
Station number
CPU number
Command number
Number of points
Device type
$0
Device
number
Number
Device type
$0
Device
number
Number
3940
IM 34M6H25-01E
7-8
Data Position
Number
3841
3842
3843
3844
Station number
CPU number
Command number
Number of points to
write
3845
Device type
$0
Device
number
Number
Data
Device type
Device
$0
number
Number
Data
3940
Data Position
Number
3841
3842
3843
Station number
CPU number
Command number
z Response Format
(See Chapter 9, “Errors and Troubleshooting” for details on EC1 and
EC2)
Data Position
Number
3941
3942
EC1
EC2
Register count=0
Figure 7.9 Response Format: R1
Data Position
Number
3941
3942
3943
3944
-
EC1
EC2
Register count = n
Data 1
Data 2
Data n
The number of data items
should be the same as the
number of points specified
in the command.
Figure 7.10 Response Format: R2
IM 34M6H25-01E
7-9
Sample Program for Creating a Command (for Reading)
This section describes a sample program for creating a command with the following
conditions:
- Station number
: 1
- CPU number
: 1
- Command number
: $11 (Word read)
Uses command format C1 according to Table 7.2, “Commands and Responses”
- Device type
: D register
- Device number : D1 of the external instrument as the first device to read
- Number of points to read : 16 points
Table 7.4, “Signal Name Assignment Table”, shows an example of signal name
assignments to the sequence devices.
Signal
Name
Start
LCslot
KyokuNo
CPU
CodNo
DevKd
Zero
DevNo
Qty
Address
I00033
D00033
D00129
D00130
D00131
D00132
D00133
D00134
D00135
I/O Comments
Start command creation
LC51 slot
Station number
CPU number
Command number
Device type
Always 0
Device number
Number of points
* Sample program to create command *
Set slot position
where UT51 is
installed
Station number
CPU number
Command no. for
word read command
Set device type
as D register
Always 0
First device
number to read
Number of points
to read
Batch write to
command area
Figure 7.11 Sample Program for Creating a Command
Tip
This sample program assigns various preset values to the D registers and uses a WRITE instruction to
perform a batch write of the values to the UT Link Module. To achieve that, create the signal
assignment table so that the addresses of the D registers follow the same order as the elements in the
command format.
IM 34M6H25-01E
7-10
7.5
Sample Program
Figure 7.12, “Sample Program for Command Communication (Reading)” includes the
entire sample program shown in Figure 7.11, “Sample Program for Creating a
Command” which configures the input and output relays. In addition, the sample
program in Figure 7.12 sets the receive data (16 words starting from Data10) to –99
when an error occurs in the response.
Table 7.5 shows an example of signal name assignments to the sequence devices.
CAUTION
communication after the status bit for the station in the remote station status storage
communication before the refresh station initial check*2 for a station has been completed
in automatic mode will disallow subsequent automatic mode communication to the
station.
This sample program describes a circuit, which takes this point into consideration and
another circuit, which does not allow concurrent usage with automatic mode. Use
either circuit as required.
*1: For details, see Figure 9.2, “Remote Station Status Register Configuration”.
*2: See Section 4.1, “When Refresh Station Designation is Not Performed in Automatic Mode”.
IM 34M6H25-01E
7-11
T Sample Program (Reading)
Signal
Name
ResRcv
ModuErr
Address
I/O Comments
X00503
X00507
Receive response completed
Module error
Command communication
error
Request to transmit
command
Self lock
LC51 slot
Station number
CPU number
Command number
Device type
Always 0
Device number
Number of points
CodErr
X00508
CodReq
Y00535
Start
iLock
stats01 *1
LCslot
Data10 *2
KyokuNo
CPU
CodNo
DevKd
Zero
DevNo
Qty
I00033
I00034
I00049
D00033
D00049
D00129
D00130
D00131
D00132
D00133
D00134
D00135
These data items should
have the same order as
data fields in the
command format.
*1: 16 bits starting from stas01 are used for reading the status of stations 1 to 16 and hence cannot be used for other
purposes.
*2: 16 words starting from Data10 are used for reading data and hence cannot be used for other purposes.
* Sample program to read 16 data using command communication *
Set slot position
where UT51 is
installed
Station number
CPU number
Command no. for
Word Read command
Set device type
as D register
Always 0
First device
number to read
Number of points
to read
Batch write to
command area
Figure 7.12 Sample Program for Command Communication (Reading) (1/2)
IM 34M6H25-01E
7-12
* Circuit to be used when command communication is inter-mixed with automatic mode *
Self lock
Check remote
station status
Request to
transmit command
Release lock
* Circuit to be used when command communication is not intermixed with automatic mode *
Request to
transmit command
* Receive and read response. On error, set data to –99 *
Read response
On error,
set data to -99
Request to
transmit command
Figure 7.13 Sample Program for Command Communication (Reading) (2/2)
Tip
- The Start contact is on before entering the sample program and is reset within the sample program.
- This sample program does not read the error and register count (data position numbers 3941,
3942) in the response format (R2). It reads starting from the data area (data position number
3943).
IM 34M6H25-01E
7-13
T Sample Program (Writing)
This section describes a sample program for creating a command with the following
conditions:
- Station number
: 1
- CPU number
: 1
- Command number
: $12 (Word write)
Uses command format C2 according to Table 7.2, “Commands and Responses”
- Device type
: D register
- Device number : D215*1 of the external instrument as the first device to access
- Number of points to write : 1 point
*1: If the external instrument is a Green Series Controller UT350/UT320 manufactured by Yokogawa M&C Corporation,
D215 is the C.RSP.
Table 7.6 shows an example of signal name assignments to the sequence devices.
Signal
Name
ResRcv
ModuErr
Address
I/O Comments
X00503
X00507
Receive response completed
Module error
Command communication
error
Request to transmit
command
Self lock
Communication alarm
LC51 slot
Station number
CPU number
Command number
Device type
Always 0
Device number
Number of points
Write data
CodErr
X00508
CodReq
Y00535
Start
iLock
Alarm
stats01*1
LCslot
Data10
KyokuNo
CPU
CodNo
DevKd
Zero
DevNo
Qty
COMdat
I00033
I00034
I00035
I00049
D00033
D00049
D00129
D00130
D00131
D00132
D00133
D00134
D00135
D00136
These data items should
have the same order as
data fields in the
command format.
*1: 16 bits starting from stats01 are used for reading the status of stations 1 to 16 and hence cannot be
used for other purposes.
Tip
This sample program assigns various setup values to the D registers and uses a WRITE instruction to
perform a batch write of the values to the UT Link Module. To achieve that, create the signal
assignment table so that the addresses of the D registers (Table 7.6, D00129 to D00136) follow the
same order as the elements in the command format.
IM 34M6H25-01E
7-14
* Sample program to write 1 data with command communication *
Set slot position
where UT51 is
installed
Station number
CPU number
command no. of
Word Write command
Set device type
as D register
Always 0
Device number
to write
Number of points
to write
Write data
Batch write to
command area
* Circuit to be used when command communication is inter-mixed with automatic mode *
Self lock
Check remote
station status
Request to
transmit command
Release lock
* Circuit to be used when command communication is not intermixed with automatic mode *
Request to
transmit command
Figure 7.14 Sample Program for Command Communication (Writing) (1/2)
IM 34M6H25-01E
7-15
* Reset start contact *
* Receive response. On error, raise an alarm.
Alarm on error
Request to
transmit command
Figure 7.15 Sample Program for Command Communication (Writing) (2/2)
Tip
- The Start contact is turned on before entering the sample program and is reset within the sample
program.
- The program turns on the internal relay (Alarm) when a communication error occurs. Add a circuit
for transmitting the alarm to the external and resetting the internal relay (Alarm).
IM 34M6H25-01E
Blank Page
8-1
8.
Accessing the UT Link Module
8.1
Accessing Using Ladder Sequence
Instructions
For sample programs that access registers and input/output relays of the UT Link
Module using a ladder sequence, see Section 5.4, “Sample Program”, Section 6.6,
“Sample Program” and Section 7.5, “Sample Program”.
z Accessing Registers
Reading Registers (Special Module Read Instruction)
READ
sl
n1
d
k
sl
n1
d
: Slot number of UT Link Module (3 digits)
: First data position number to read
: First device number for storing the read data
k
-
Writing to Registers (Special Module Write Instruction)
WRITE
s
sl
n2
k
s
sl
n2
k
: First device number for write data
: Slot number of UT Link Module (3 digits)
: First data position number to start writing
CAUTION
Use special module instructions intended for 16-bit (1 word) data to access the registers
of the UT Link Module. The following 4 instructions can be used:
- Special Module Read (READ)
- Special Module Write (WRITE)
- Special Module High-Speed Read (HRD)
- Special Module High-Speed Write (HWR)
Special module instructions intended for reading and writing 32-bit (2 words) long-word
data cannot be used.
IM 34M6H25-01E
8-2
z Accessing input/output relays
-
For accessing input relays of the UT Link Module,
XVVVnn
VVV
nn
-
: Slot number
: Relay number
For accessing output relays of the UT Link Module,
YVVVnn
VVV : Slot number
nn
: Relay number
See Also
See the following manual for details on the ladder program instructions.
Sequence CPU Manual (Instructions) (IM34M6P12-03E)
IM 34M6H25-01E
8-3
8.2
Accessing Using BASIC Statements
For sample programs that access the UT Link Module from a FA-M3 BASIC CPU, see
Section 6.6, “Sample Program”.
BASIC Statements that can be Used in a UT Link Module
BASIC statements shown in Table 8.1 can be used to access the UT Link Module.
Operation is not guaranteed when BASIC statements other than those in Table 8.1 is
used to access the module.
Table 8.1 BASIC Statements that can be Used in the UT Link Module
Function
Declare use of module
Read mode register
Write to mode register
Read data register
Write to data register
Read input relay
Write to output relay
Statement Syntax
ASSIGN LC51=SL
SL : Slot number
STATUS SL, n; I
SL : Slot number
n : Data position number
I : Integer variable name or
integer array variable
name for storing the read
data
CONTROL SL, n; I
SL : Slot number
I : Integer type variable name
or integer array variable
name storing the write data
ENTER SL, n NOFORMAT; I
SL : Slot number
I : Integer variable name or
integer array variable
name for storing read data
OUTPUT SL, n, NOFORMAT;I
SL : Slot number
I : Integer type variable name
or integer array variable
name storing the write data
STATUS SL, n; P
SL : Slot number
(always 101)
P : Variable for storing the
read value.
CONTROL SL, n; P, M
SL : Slot number
(always 101)
P : Output data
M : Mask pattern
Explanation
Defines the slot number where the UT
Link module is installed
Reads data position number n of the
mode register of the module installed in
slot number SL, and stores the data in
variable I.
Stores the contents of variable I in data
position n of the mode register of the
module installed in slot number SL.
Reads data position number n of the
data register of the module installed in
slot number SL, and stores the data in
variable I.
Stores the contents of variable I in data
position n of the data register of the
module installed in slot number SL.
Reads an input relay of the module
installed in slot number SL, and stores
the data in variable P.
Outputs the value of variable P to the
output relay of the module installed in
slot number SL.
By using a mask pattern, you can write
only to specific relays.
CAUTION
Configuration of the UT Link Module”.
IM 34M6H25-01E
8-4
8.2.1 Declaring Use of Module
The ASSIGN statement declares the use of the module. Always execute the ASSIGN
statement before using other BASIC statements in this module. The ASSIGN statement
defines the slot number where the module is installed.
ASSIGN LC51=SL
SL : Slot number. Number or numeric variable.
8.2.2 Reading and Writing Mode Registers
z Reading mode registers
To read a mode register, specify the slot number where this module is installed and a
data position number. The mode register value read is stored in the specified integer
variable or integer array variable.
STATUS SL, n ; I
SL : Slot number
I
: Integer variable name or array variable name for storing the read data
z Writing to mode registers
To write to a mode register, specify the slot number where this module is installed and a
data position number. Before writing, store the mode register value to be written in the
specified integer variable or integer array variable.
CONTROL SL, n ; I
SL : Slot number
I
: Integer variable name or array variable name storing the write data
IM 34M6H25-01E
8-5
8.2.3 Reading and Writing Data Registers
z Reading data registers
To read a data register, specify the slot number where this module is installed and a data
position number. The data register value read is stored in the specified integer variable
or integer array variable.
ENTER SL, n NOFORMAT ; I
SL : Slot number
n : Data position number - 50 *1
I
: Integer variable name or array variable name for storing the read data
*1:
See ‘CAUTION’ below.
z Writing to data registers
To write to a data register, specify the slot number where this module is installed and a
data position number. Before writing, store the data register value to be written in the
specified integer variable or integer array variable.
OUTPUT SL, n NOFORMAT ; I
SL : Slot number
n : Data position number - 50 *1
I
: Integer variable name or array variable name storing the write data
*1:
See ‘CAUTION’ below.
CAUTION
Configuration of UT Link Module”.
IM 34M6H25-01E
8-6
8.2.4 Reading and Writing Input and Output Relays
Input and output relays are read and written in single word units. See Section 5.2,
“Input/Output Relays Used in Automatic Mode”, Section 6.2, “Input/Output Relays Used
in Manual Mode” and Section 7.2, “Input/Output Relays Used in Command
Communication” for the function of each input/output relay.
z Reading input relays
Use the STATUS statement to read an input relay.
STATUS SL, n ; P
SL : Slot number
n : Data position number (always 101)
P : Variable for storing the read data
bit
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Data position
number = 101
Input relay
number
XVVV01
XVVV02
XVVV03
XVVV04
XVVV05
XVVV06
XVVV16
Figure 8.1 Data Position Numbers and Input Relays
z Writing to output relays
Use the CONTROL statement to write to an output relay.
CONTROL SL,n ; P, M
SL : Slot number
n : Data position number (always 101)
P : Output data
M : Mask pattern
bit
15 14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Data position
number = 101
Output relay
number
YVVV33
YVVV34
YVVV35
YVVV36
YVVV37
YVVV38
YVVV48
Figure 8.2 Data Position Numbers and Output Relays
IM 34M6H25-01E
8-7
The mask pattern is used to specify the bit positions in the output data to be changed.
Only output bit positions with the mask bit set to 1 are changed, output bit positions with
mask bit 0 are not changed.
Example:
Output data
P=
1 0 1 0 1 1 1 1 0 1 0 1 1 1 1 1
= $AF5F
Mask pattern M=
1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0
= $FF00
Output relay
before execution
0 0 0 0 0 0 0 00 1 0 0 0 1 1 0
= $0046
Result of output
1 0 1 0 1 1 1 1 0 1 0 0 0 1 1 0
= $AF46
Figure 8.3 Mask Pattern and Output Data
See Also
See the following manual for details on the BASIC program instructions.
BASIC CPU Modules and YM-BASIC/ FA Programming Language
(IM34M6Q22-01E)
IM 34M6H25-01E
Blank Page
9-1
9.
Errors and Troubleshooting
9.1
Error Handling
When a communication error occurs, the UT Link Module notifies the user of the type of
error using relays and registers. Error information stored in the relays and registers can
be read using user programs.
Most errors are syntax errors in a user program, and occur during debugging. However,
some error caused by, say, discontinuity in the cable, may occur during actual operation.
CAUTION
Sometimes, error in communication with an external instrument affects the control of the
entire system. In such a situation, read the error information stored in the relays and
registers, and send an alarm to the external environment using contact outputs,
displays, etc.
When a communication error with an external instrument severely affects control, it is
important to adopt measures appropriate for the control object, such as stopping the
control operation etc.
The UT Link Module operates the following relays and registers when an error occurs.
- Error occurrence :
Corresponding relay (XVVV06 to XVVV08) turns on.
-
Error details
:
VVV: the slot number where this module is installed.
The error details* are stored in the following registers:
Mode register
Remote Station Status register
Response Data register
*: The register where error information is stored depends on the error.
See Chapter 8, "Accessing the UT Link Module" on how to read relays and registers.
Table 8.1, “Errors and Corresponding Relays and Registers” shows the errors and error
types that may be detected by the UT Link Module.
IM 34M6H25-01E
9-2
Table 9.1 Errors and Corresponding Relays and Registers
Classification
During
configuration
Item
Mode register
parameter error
Module error
Command parameter
error
Configuration
information error
Transmission time out
error
Communication error
Checksum error *1
Time out error during
character receiving
*1
Time out error awaiting
response
Error in length of
received text
Refresh
communication error
*2:
{





{


{

{

{
{
{
{

{
{




{



{

Relay
which
Turns On
When This
Error
Occurs
XVVV07*2
Register
Storing Error
See Also
Details
Information
Mode
register
Subsection
9.1.1


{

Error response (1) *1
. Communication error
. Checksum error
{

{

Error response (2)
Error responses other
than error response
(1)


{







{
{



{



{



{



{



{
Error in length of
received text
Error response (1) *1
. Communication error
. Checksum error
Error response (2)
Error responses other
than error response
(1)
*1:


Communication error*1
Checksum error *1
Time out error during
character receiving
Time out error awaiting
response
Command
communication error
Module Operation
During Automatic Command
Mode
Mode
CommuRegister /Manual
nication
Setup
Mode
XVVV06*2
XVVV08*2
Remote
station
status
register
Subsection
9.1.2
Response
data
register
Subsection
9.1.3
Error occurs when communication is still unsuccessful after retrying for the number of times specified in the Number
of Retries mode register.
VVV: Slot number where the UT Link module is installed.
IM 34M6H25-01E
9-3
9.1.1
Module Error
Module error occurs in the following situations:
- when there is an invalid parameter during parameter setup to the module.
-
When there is an error in the transmitted text during command operation.
The error details information is stored in the Module Error Details mode register (data
position numbers 31, 32) when module error occurs. Error Code 1 (EC1) and Error Code
2 (EC2) listed in the following table are stored in data position numbers 31 and 32
respectively.
Table 9.2 Error Details Information of Module Error (data position numbers 31 and 32)
Relay
XVVV07
Classification
Item
Error Code 1
(EC1)*2
Mode register
parameter error
$11
Command
parameter error
$12
Configuration
information error
$13
Module error
Transmission
time out error
*:
*1:
*2:
$14
Error Code 2
(EC2)
Stores the data
position
number of the
mode register
with error
Stores the
command
register
number with
error
Stores data
position
number of the
configuration
information
with error
*1
―
Possible
Causes
Invalid
parameter
setup value
Invalid
parameter
setup value
Invalid setup
value in the
configuration
Power supply
for sub-station
is off.
Discontinuity in
the connecting
cable
VVV: slot number where the UT Link Module is installed.
In this case, the value of error code 2 (EC2) is undefined.
Value is expressed in hexadecimal.
IM 34M6H25-01E
9-4
9.1.2
Refresh Communication Error
T Error Type
Refresh communication error occurs in the following situations:
- when a communication error occurs during automatic mode or manual mode
operation.
- when a communication error occurs while receiving the response text during
configuration in automatic mode.
- When an error response is received from the external instrument.
When a refresh communication error occurs, Error Code 1 (EC1) and Error Code 2
(EC2) of Table 9.3 are stored as detailed error information in their respective locations in
the Remote Station Status register.
See item "T Remote Station Status Register" in subsequent pages for more details on
the Remote Station Status register.
Table 9.3 Error Details Information of Refresh Communication Error
(data position numbers 3771 to 3834)
Item
Error code 1
(EC1) *2
Error code 2
(EC2)
Communication
error
$21
(Figure 9.1)
Checksum error
$22
―
$24
―
$25
―
$26
―
Classifi
cation
Relay
Refresh
communication
error
XVVV06
Time out error
during
character
receiving
Time out error
awaiting
response
Error in length
of received text
Error response
*:
*1:
*2:
*1
Possible causes
Communication conditions
do not agree with that of
*1
Ending character or ETX is
not received.
*1
Response from external
instrument is not received.
*1
Error in length of response
received from external
instrument.
(See subsection 9.1.4)
MSB
LSB
b7
b6
b5
b4
b3
b2
b1
b0
27
26
25
24
23
22
21
20
8
4
2
1
128 64
32
16
Each bit has the following meaning:
b7 : (Reserved)
b6 : (Reserved)
b5 : Over run error
b4 : Framing error
b3 : Parity error
b2 : Overflow of receiving buffer
b1 : Time out during character receiving
b0 : Break received
Example: When an over run error and a parity error occur concurrently, the value of error code 2 (EC2)
assumes the following value:
EC2 = b5 × 1 + b3 × 1
= 25 × 1 + 23 × 1
= 32 + 8 = 40
Figure 9.1 Error Code 2 (EC2) Value for Communication Error
IM 34M6H25-01E
9-5
T Remote Station Status Register
The Remote Station Status register consists of the following 3 areas.
Remote station status register
(1)
(2)
(3)
Storage area for remote station status
Storage area for station where error occurs
Storage area for error details code
Figure 9.2 shows the data position numbers and register structure of the Remote Station
Status register.
*1
Data position
number
Error Details Code
storage area
3771
CPU1 of station 1
3772
CPU2 of station 1
3773
CPU1 of station 2
3774
•
Error Station
storage area
Remote Station
Status storage
area
98
1
EC1
•
•
•
•
•
•
•
•
•
•
•
EC2
•
CPU2 of station 2
•
1
•
•
•
•
•
3833
CPU1 of station 32
3834
CPU2 of station 32
3835
CPU1 error station (1-16)
16 15 14 13 12 11 10 09 08 07 06 05 04 03 02 01
3836
32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17
3837
3838
3839
Remote station status (1-16)
16 15 14 13 12 11 10 09 08 07 06 05 04 03 02 01
3840
Remote station status (17-32)
32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17
Corresponding
station number
•
•
*1: The data position number of the Error Details Code storage area for CPUn of station m is given as:
Data position number = 3771+(m-1)×2+(n-1)
Figure 9.2 Structure of Remote Station Status Register
(1) Remote Station Status storage area
The Remote Station Status storage area is used to monitor the status of
communications with the remote stations (external instrument). The status of
communication with a remote station is stored as a bit expressed as follows.
Normal communication
:1
Communication fails or no communication : 0
Information in the Remote Station Status storage area is updated in real time according
to the outcome of communications in automatic mode, manual mode and command
communication.
Use the information stored in this area to monitor*1 the communication status of each
station.
*1:
When communicating with multiple stations, if communication with a station is cut-off and subsequently restored, the
status of the other stations having normal communication may become 0 for an instantaneous moment. When
monitoring the communication status, assume communication cut-off only if the status remains 0 for about 10
seconds. After downloading the program, switch off and then switch on the power supply to the FA-M3 before
starting the monitoring process.
IM 34M6H25-01E
9-6
(2) Error Station storage area
The Error Station storage area is used to monitor the occurrence of errors in remote
stations (external instrument) during automatic mode and manual mode operation.
Information of each remote station is stored as a bit expressed as follows.
Error has occurred : 1
No error
:0
Once an error occurs, the error information is stored in the Error Station storage area
and remains unchanged until the user clears the error.
To clear the Error Station storage area, turn on the Clear Remote Station Status Register
(YVVV37) relay with a user program.
CAUTION
Turning on the Clear Remote Station Status Register (YVVV37) relay clears the Error
Station storage area as well as all error codes stored in the Error Details Code storage
area.
Therefore, if an error has also occurred in another external instrument, always read the
Error Details Code storage area of the station before turning on the Clear Remote
Station Status Register (YVVV37) relay.
TIP
When an error occurs during command communication, information on the error station is not stored in
the storage area. Instead, the error details code is stored in the response data for the command
transmitted from this module. The user can then know from this information that an error has occurred
in the external instrument that is specified in the transmitted command.
(3) Error Details Code Storage Area
An Error Details Code storage area is used to store the Error Details Code*1 of a remote
station (external instrument) in automatic mode and manual mode.
Two Error Details Code storage areas are provided for each external instrument to
accommodate external instruments with two CPUs. To clear the Error Details Code
storage areas, turn on the Clear Remote Station Status Register (YVVV37) relay with a
user program.
*1:
See Table 9.3, “Error Details Information of Refresh Communication Error” for details on the error codes.
IM 34M6H25-01E
9-7
9.1.3
Command Communication Error
A command communication error occurs in the following situations:
- when a communication error occurs while receiving the response text during
command communication
- when an error response is received from an external instrument
When a command communication error occurs, the error details information is stored in
the response data register (data position number 3941) as error code 1 (EC1) in bits b15
to b8 and as error code 2 (EC2) in bits b7 to b0 as shown in Table 9.4 (Figure 9.3).
Table 9.4 Error Details Information of Command Communication Error
(data position number 3941)
Relay
Error Code 1
(EC1)*2
Error Code 2
(EC2)
Communication
error
$21
(Figure 9.3)
Checksum error
$22
―
$24
―
$25
―
$26
―
Classification
Item
Time out error
during character
receiving
Time out error
awaiting response
Command
communication
error
XVVV08
Error in length of
received text
Error response
*1
Possible Causes
*1
Ending character or ETX is
not received.
*1
Response from external
instrument is not received.
Error in length of response
received from external
instrument
*1
(See subsection 9.1.4)
*:
*1:
*2:
MSB
LSB
b7
b6
b5
b4
b3
b2
b1
b0
27
26
25
24
23
22
21
20
8
4
2
1
128 64
32
16
b7: (Reserved)
b6: (Reserved)
b5: Over run error
b4: Framing error
b3: Parity error
b2: Overflow of receiving buffer
b1: Time out during character receiving
b0: Break received
Example:
When an over run error and a parity error occur concurrently, the value of error code 2 (EC2)
assumes the following value:
EC2 = b5 × 1 + b3 × 1
= 25 × 1 + 23 × 1
= 32 + 8 = 40
Figure 9.3 Error Code 2 (EC2) Value for Command Communication Error
IM 34M6H25-01E
9-8
9.1.4
Error Response
An error response is a response returned by an external instrument for a transmitted
command when it detects an error. Errors detected by the UT Link Module and error
responses from the external instruments are stored in the same location. To distinguish
between errors detected by the UT Link module and error responses for the same
error type (e.g. communication error), the error codes differ.
An error response returned from an external instrument is stored unchanged into the
following registers:
-
for refresh communication error: Remote Station Status register *1
for command communication error: Response Data register *2
Error codes of error responses and their meaning are given in Table 9.5, “Error Code 1
(EC1) in Error Response” and Table 9.6, “Error Code 2 (EC2) in Error Response”.
*1:
*2:
See Figure 9.2, “Structure of Remote Station Status Register”.
See Figure 7.9, “Response Format: R1” and Figure 7.10, “Response Format: R2”.
Table 9.5 Error Code 1 (EC1) in Error Response
Error Code
Item
1
(EC1)*
$01
CPU number
specification error
$02
Command error
$03
Device specification
error
$04
Set value is out of
range
$05
Out of data count range
$06
Monitor error
$07
CPU type error
$08
Parameter error
$41
Communication error
$42
$43
Checksum error
Internal buffer overflow
Time out during
character receive
$44
$51
CPU error
$52
CPU processing error
$91
Parameter error
Device address
specification error
$B3
$C1
Out of common area
$D1
Device error
$E1
Device not ready
$F1
Internal error
*1:
Possible Causes
- CPU number exceeds the range of 1 to 4.
- Command does not exist.
- Command is not executable.
- Device name does not exist.
(See Error Code 2 in Table 9.6)
- Invalid use of a bit device for word access.
- Characters other than 0 and 1 are used for bit setting.
- Specified word set value is out of valid range of $0000 to $FFFF.
- Specified number of bits, number of words etc. exceed the specification
range.
- Specified data count and parameter count of device etc. do not agree.
- Monitoring is performed without monitor specification (Command number
$06, $16).
- Not a BASIC CPU.
- Parameters other than those mentioned above are invalid.
- Error occurred during communication.
(Refer to Error Code 2 (Table 9.6))
- Values of checksum differ. (Bit omission, changed character)
- Amount of data exceeds capacity.
- Ending character or EXT is not received.
- Time out period is 5 seconds.
- End of processing is not returned by CPU due to CPU power failure etc. (time
out)
- BASIC commands are executed for a sequence CPU.
- Error detected during CPU processing.
- Specified numeric value is out of range.
- Specified sequence device address is invalid.
- When accessing the BASIC common area, the specified starting position and
number of bytes exceeded the common area.
- Module error
- Attempt to access an I/O module that is not installed.
- I/O module failure
- Internal processing error
IM 34M6H25-01E
9-9
Table 9.6 Error Code 2 (EC2) in Error Response
Error Code
1
(EC1)*
Item
$03
Device specification error
$04
Set value is out of range
$05
Out of data count range
Error Code (EC2)
The number of the invalid parameter is expressed in hexadecimal.
Counting from the first parameter, it is the ordinal number of the first
invalid parameter.
Example:
S
T
1
2
3
4
5
┌┐ ┌────┐
┌────┐
0101ABRAW 30 Y00501, 1, 10002, 0,
6 ← Parameter no.
┌────┐
A00502
↑
$08
Parameter error
X
Device specification error
In this case, error code EC1=$03
error code EC2=$06
MSB
b7
$41
Communication error
$52
CPU processing error
LSB
b6
b5
b4
b3
b2
b1
b0
b7: (Reserved)
b6: (Reserved)
b5: Over run error
b4: Framing error
b3: Parity error
b2: Overflow of receiving buffer
b1: Time out during character receiving
b0: Break received
$1V: Self diagnostic error
$2V: Program error (including parameter error)
$4V: Inter-CPU communication error
$8V: Device access error
$FV: Internal system error
For EC1 values other than the above, EC2 is undefined.
*1:
IM 34M6H25-01E
9-10
9.2
Troubleshooting Flowchart When ‘RDY’ LED
Is Not On
‘RDY’ LED is not on
Is the communication mode switch
correctly set to “7”?
See Subsection 2.7.2,
“Setting UT Link Module”
NO
Correct setup
YES
Any error detected during
module self diagnosis?
See Subsection 2.7.3,
“Self Diagnosis”
NO
Replace module
YES
Module is normal
End
Figure 9.4 Troubleshooting Flowchart When ‘RDY’ LED Is Not On
IM 34M6H25-01E
9-11
9.3
Troubleshooting Flowchart When
Communication Fails
Communication fails
Is the cable
correctly connected?
See Section 2.6,
“Connecting
” to External
Instruments
NO
Connect the cable
properly.
YES
Any cable discontinuity?
NO
Replace the cable
YES
Are the communication conditions
consistent over all stations?
NO
Set communication
conditions correctly.
NO
Set station number
correctly.
YES
Any duplicate station number?
YES
Any error
detected during module self
diagnosis? See Subsection 2.7.3,
“Self Diagnosis”
NO
Replace the module
YES
End
Normal
Figure 9.5 Troubleshooting Flowchart When Communication Fails
IM 34M6H25-01E
9-12
9.4
Troubleshooting Errors that Occur during
Refresh Operation
Turn on Request to Refresh
relay YVVV36
Is Module
Error relay on?
XVVV07
NO
YES
Is Refresh Communication
Error relay on?
XVVV06
NO
YES
Read Module
Error mode register
(data position numbers
31 and 32)
Read Error Station register
(data position numbers 3835 to
3838) Figure 9.2
Turn off Request to Refresh
relay YVVV36
Read error details information
for error stations (data position
numbers 3771 to 3834)
Figure 9.2
Analyze error using Table 9.2
and correct program
Clear Error Details?
End
NO
YES
Turn on Clear Remote Station
Status Register relay
YVVV37
NO
Is Clear Remote
Station Status Register
Completed relay on?
XVVV05
Turn on Clear Refresh
Communication Error relay
YVVV38
NO
Refresh
Communication
Error relay on?
XVVV06
YES
Turn off Clear Remote Station
Status Register relay
YVVV37
YES
Turn off Clear Refresh
Communication Error relay
YVVV38
and correct program
Figure 9.6 Troubleshooting Errors that Occur during Refresh Operation
IM 34M6H25-01E
9-13
T Sample Program for Reading Errors That Occur During Refresh
Operation
Signal Name
RegCrE
Address
X00505
RefErr
ModuErr
RefReq
RegClr
X00506
X00507
Y00536
Y00537
LCslot
ModErDt *1
ErrNo
ErrDe
D00033
D00113
D00115
D00116
I/O Comments
Clear remote station status
register completed
Refresh communication error
Module error
Request to refresh
Clear remote station status
register
LC51 slot
Module error data
Error station number
Error details
*1: Two words starting from ModErDt are used to read the error data and cannot be used for other purposes.
Figure 9.7 Sample Program for Reading Errors That Occur During Refresh Operation
* Sample Program for Reading Errors That Occur *
During Refresh Operation
file: REFERR
Module error
details
Error Stations for
CPU1: 1 to 16
Error Details for
CPU1 of Station 1
Clear Remote
Station Status
Register
Reset Clear
Register relay
IM 34M6H25-01E
9-14
9.5
Troubleshooting Errors that Occur during
Turn on Request to Transmit
Command relay
YVVV35
Is Module
Error relay on?
XVVV07
YES
Read Module Error mode
register (data position
numbers 31 and 32)
NO
Is Command
Communication
Error relay on?
XVVV08
YES
NO
Is Response Receive
Completed relay on?
XVVV03
NO
YES
Turn off Request to Transmit
Command relay
YVVV35
Read error code in Response Data
register (data position no. 3941)
and correct program
Turn off Request to
Transmit Command relay
YVVV35
End
Analyze error using Table 9.4 and
correct program
Figure 9.8 Troubleshooting Errors that Occur during Command Communication
IM 34M6H25-01E
9-15
T Sample Program for Reading Errors That Occur During Command
Communication
Signal Name
ModuErr
CodErr
CodReq
Address
X00507
X00508
Y00535
I/O Comments
Module error
Command communication error
Request to transmit command
LCslot
ModErDt *1
CodErDe
D00033
D00113
D00117
LC51 slot
Module error data
Command error details
*1:
Two words starting from ModErDt are used to read the error data and cannot be used for other purposes.
* Sample Program for Reading Errors that Occur during *
file: COMDERR
Module error
details
Reset request to
transmit command
Command
error details
Reset request to
transmit command
Figure 9.9 Sample Program for Reading Errors That Occur During Command Communication
IM 34M6H25-01E
Blank Page
Appx. 1-1
Appendix
Appendix 1. Configuration Data Area
Station
Number
Table Appx.1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
Configuration Data Area
First
First
Data
Device
Data
Device
device
device
count
type
count
type
number
number
51
52
53-54
55
56
57-58
67
68
69-70
71
72
73-74
83
84
85-86
87
88
89-90
99
100
101-102
103
104
105-106
115
116
117-118
119
120
121-122
131
132
133-134
135
136
137-138
147
148
149-150
151
152
153-154
163
164
165-166
167
168
169-170
179
180
181-182
183
184
185-186
195
196
197-198
199
200
201-202
211
212
213-214
215
216
217-218
227
228
229-230
231
232
233-234
243
244
245-246
247
248
249-250
259
260
261-262
263
264
265-266
275
276
277-278
279
280
281-282
291
292
293-294
295
296
297-298
307
308
309-310
311
312
313-314
323
324
325-326
327
328
329-330
339
340
341-342
343
344
345-346
355
356
357-358
359
360
361-362
371
372
373-374
375
376
377-378
387
388
389-390
391
392
393-394
403
404
405-406
407
408
409-410
419
420
421-422
423
424
425-426
435
436
437-438
439
440
441-442
451
452
453-454
455
456
457-458
467
468
469-470
471
472
473-474
483
484
485-486
487
488
489-490
499
500
501-502
503
504
505-506
515
516
517-518
519
520
521-522
531
532
533-534
535
536
537-538
547
548
549-550
551
552
553-554
*:
First
First
Data
Device
Data
Device
device
device
count
type
count
type
number
number
59
60
61-62
63
64
65-66
75
76
77-78
79
80
81-82
91
92
93-94
95
96
97-98
107
108
109-110
111
112
113-114
123
124
125-126
127
128
129-130
139
140
141-142
143
144
145-146
155
156
157-158
159
160
161-162
171
172
173-174
175
176
177-178
187
188
189-190
191
192
193-194
203
204
205-206
207
208
209-210
219
220
221-222
223
224
225-226
235
236
237-238
239
240
241-242
251
252
253-254
255
256
257-258
267
268
269-270
271
272
273-274
283
284
285-286
287
288
289-290
299
300
301-302
303
304
305-306
315
316
317-318
319
320
321-322
331
332
333-334
335
336
337-338
347
348
349-350
351
352
353-354
363
364
365-366
367
368
369-370
379
380
381-382
383
384
385-386
395
396
397-398
399
400
401-402
411
412
413-414
415
416
417-418
427
428
429-430
431
432
433-434
443
444
445-446
447
448
449-450
459
460
461-462
463
464
465-466
475
476
477-478
479
480
481-482
491
492
493-494
495
496
497-498
507
508
509-510
511
512
513-514
523
524
525-526
527
528
529-530
539
540
541-542
543
544
545-546
555
556
557-558
559
560
561-562
Numbers in the table represent data position numbers of the UT Link Module
IM 34M6H25-01E
Appx. 1-2
Appendix 2. Refresh Communication Data Area
Table Appx. 2
Station
Number
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
*:
Refresh Communication Data Area
Read Area
Write Area
571-595
596-620
671-695
696-720
771-795
796-820
871-895
896-920
971-995
996-1020
1071-1095
1096-1120
1171-1195
1196-1220
1271-1295
1296-1320
1371-1395
1396-1420
1471-1495
1496-1520
1571-1595
1596-1620
1671-1695
1696-1720
1771-1795
1796-1820
1871-1895
1896-1920
1971-1995
1996-2020
2071-2095
2096-2120
2171-2195
2196-2220
2271-2295
2296-2320
2371-2395
2396-2420
2471-2495
2496-2520
2571-2595
2596-2620
2671-2695
2696-2720
2771-2795
2796-2820
2871-2895
2896-2920
2971-2995
2996-3020
3071-3095
3096-3120
3171-3195
3196-3220
3271-3295
3296-3320
3371-3395
3396-3420
3471-3495
3496-3520
3571-3595
3596-3620
3671-3695
3696-3720
Read Area
Write Area
621-645
646-670
721-745
746-770
821-845
846-870
921-945
946-970
1021-1045
1046-1070
1121-1145
1146-1170
1221-1245
1246-1270
1321-1345
1346-1370
1421-1445
1446-1470
1521-1545
1546-1570
1621-1645
1646-1670
1721-1745
1746-1770
1821-1845
1846-1870
1921-1945
1946-1970
2021-2045
2046-2070
2121-2145
2146-2170
2221-2245
2246-2270
2321-2345
2346-2370
2421-2445
2446-2470
2521-2545
2546-2570
2621-2645
2646-2670
2721-2745
2746-2770
2821-2845
2846-2870
2921-2945
2946-2970
3021-3045
3046-3070
3121-3145
3146-3170
3221-3245
3246-3270
3321-3345
3346-3370
3421-3445
3446-3470
3521-3545
3546-3570
3621-3645
3646-3670
3721-3745
3746-3770
Numbers in the table represent data position numbers of the UT Link Module
IM 34M6H25-01E
Appx. 1-3
Appendix 3. Examples on Performance
The system performance when an external instrument is connected is largely dependent
on the transmission data size, communication conditions and the response time of the
UT Link Module
External
instrument
Figure Appx. 1
(1)
(2)
(5)
(4)
(3)
Communication Path
In Figure Appx. 1, the total transmission/receiving time is divided into the following
components:
(1)
(2)
(3)
(4)
(5)
Transmission processing time of the UT Link Module
Command transmission time
Response time of external instrument
Response communication time
Receiving processing time of the UT Link Module
Among these components, items (1) and (5) can be ignored.
Items (2) and (4) can be computed from the transmission/receiving data size. Item (5) is
determined by the type and operating mode of the external instrument, as well as the
size of the read/write data.
z Example for Calculating the Transmission/Receiving Communication
Time
The transmission/receiving time for the recommended communication conditions is
given below.
Table Appx. 3
Recommended Communication Conditions
(Same as the Factory Setting of the UT Link Module)
Item
Communication speed
Data length
Parity
Start bit
Stop bit
Ending character
Checksum
Condition
9600 bps
8 bits
Even
1 bit
1 bit
Yes
No
*1
*2
The transmission/receiving time = (transmission/receiving data size ) × (Data frame length )
÷ (Communication speed)
*1:
*2:
Transmission/receiving data size = size of fixed portion (including the ending character) + size of data portion
(in bytes)
Data frame length = start bit (1) + data length (8) + stop bit (1) + parity bit (1) = 11 (bits)
IM 34M6H25-01E
Appx. 1-4
-
-
-
-
Transmission/receiving data size
The transmission/receiving data size varies with the number of data read or written.
The UT Link Module also appends information before transmitting data to the
communication line and removes information not required by the user program from
data received from the communication line. Therefore, the data size received from
the user is not the same as the actual data size transmitted on the communication
line. Here, we show examples for calculating the transmission/receiving time
required for reading respectively 1, 8 and 25 words of contiguous data based on
pre-computed transmission/receiving data sizes.
The communication time for writing is the same as that for reading data of the same
size.
Transmission/receiving time required for reading 1 word of data
The transmission/receiving data size in this case is 33 bytes.
Transmission/receiving time = 33 (bytes) × 11 (frame length) ÷ 9600 (bps) = 0.038 s
Transmission/receiving time required for reading 8 words of data
Transmission/receiving time required for reading 25 words of data
z Sample response time of an external instrument (reference values)
As the response time varies with the instrument type and operating mode, we show
here examples for the minimum response time and the maximum response time for
each reading of different number of data words. Response time during writing is the
same.
Depending on the instrument type, the response time may actually be 5 to 6 times the
values shown in the table for some instruments.
Table Appx.4 Sample Response Times of External Instruments (Reference Values)
Data Count
1
8
25
Minimum Response Time
0.005
0.008
0.015
Unit: s
Maximum Response Time
0.040
0.045
0.051
z Sample Performance Values (Reference Values)
The approximate performance values are determined by summing the
transmission/receiving time and the response time of the external instrument.
Table Appx. 5 shows examples of these total values.
Table Appx. 5 Sample Performance Values (Reference Values)
Data Count
1
8
25
Minimum Response Time
0.043
0.077
0.162
Unit: s
Maximum Response Time
0.078
0.114
0.198
The sample performance values shown above are values for one station. When
connecting multiple stations to a single line, the access time interval for a specific station
can be obtained by multiplying the values shown in Table Appx. 5 by the number of
stations.
These examples do not take into consideration error situations such as occurrence of
retries and hence, allowance should be built in during system design.
IM 34M6H25-01E
Appx. 1-5
Appendix 4. Increasing Ladder Program Speed
z Increasing program speed through instructions used
The scan time of a program depends on the instructions used in the program and how
the program is coded (the program structure). The sample programs in this manual
uses 2 different approaches in program coding. We will explain these two methods to
help you understand how you may speed up scan time.
There are 2 ways to code the program:
- By writing data to the data position numbers word-by-word
This method is used in the “Specifying refresh stations” program code section in
Figure 5.4, “Sample Program for Automatic Mode” and the “Setting station 1 read
area” program code section in Figure 6.6, “Sample Program for Manual Mode (1/2)”
where multiple WRITE instructions are coded.
-
By setting data to the D registers followed by a batch write
This method is used in Figure 7.12, “Sample Program for Command
Communication (Reading) (1/2)” where only one WRITE instruction is coded.
Processing of WRITE instructions and READ instructions takes time. The processing
time for a WRITE instruction that writes 2 words is, however, less than twice the
processing time for a WRITE instruction that writes 1 word. Using a WRITE instruction
to write multiple words at one go reduces processing time, when compared to using
many WRITE instructions to write data word-by-word. The MOV instruction is much
faster than the WRITE instruction.
Therefore, setting the data in the D registers using MOV instructions and then
performing a batch write using a WRITE instruction speeds up the handling of multiple
words. Take note however that the D registers for the batch WRITE must occupy serial
addresses.
The sample programs for automatic mode and manual mode execute multiple WRITE
instructions only once during power-on processing. Although this lengthens the time for
power-on handling, it does not pose a problem during regular scans. In the program
code section for reading during a regular scan, READ instructions are coded to perform
batch reading of multiple data in order to reduce processing time.
Batch handling of multiple words by applying the above tip is highly recommended for
programs that regularly execute WRITE and READ instructions.
Tip
See the following manual for details on the processing time for each instruction:
Sequence CPU Modules - Instructions (IM34M6P12-03E)
IM 34M6H25-01E
Appx. 1-6
z Increasing program speed through program structure
Even if many lines are coded in a program, high speed scans may still be achieved if
few program lines are actually executed during each scan.
One way to realize this is through a subroutine structure. Create a subroutine for a
group of functions and invoke them as and when required. Since a subroutine is not
executed if it is not invoked, this reduces the number of lines actually executed.
There are 2 ways to perform the subroutine calls. The first is consecutive calls whilst an
input condition is true and the second is a single call when the input condition becomes
true (input differential type instruction). Although whichever method is suitable depends
on the purpose of the program, using an input differential type instruction wherever
permitted will increase program speed.
IM 34M6H25-01E
Index-1
FA-M3
UT Link Module
IM 34M6H25-01E 1st Edition
Index
A
accessing using BASIC ...................................8-3
accessing using ladder sequence ...................8-1
attaching and detaching modules ..................2-10
automatic mode ........................................ 3-2,5-1
C
command communication ......................... 3-3,7-1
commands and responses ..............................7-5
commands and responses, formats of ...........7-6
communication conditions, recommended .....2-6
communication methods, types of ...................3-1
compatibility with CPU modules ......................2-1
compatibility with external instruments ...........1-1
configuration data area ............................ Appx.-1
configuration setup (communication range) ....6-7
connecting to external instruments ..................2-5
R
reading and writing data in automatic mode ... 5-4
reading and writing data in manual mode .....6-10
refresh communication data area .............Appx.-2
refresh station designation .............................. 4-1
register configuration ....................................... 3-4
remote station status ....................................... 9-5
S
sample program for automatic mode .............. 5-5
self diagnosis ................................................... 2-8
setting communication conditions ................... 2-6
setting mode registers (communication
conditions) ....................................................... 6-5
setting the UT Link Module .............................. 2-6
slot number ...................................................... 3-5
T
troubleshooting ................................................ 9-1
D
D register map, example ..................................3-7
data areas used in command
communication .................................................7-5
E
external dimensions and weight ......................2-3
F
function specifications ......................................2-1
I
input/output relays used in command
communication .................................................7-3
input/output relays used in manual mode .......6-3
input/output relays, used in automatic mode ...5-2
M
manual mode ............................................ 3-2,6-1
IM 34M6H25-01E
Blank Page
i
Revision Information
Document Name: UT Link Module
Document No.:
Edition
1st
IM34M6H25-01E
Date
Nov. 2001
Revised Item
New publication
Written by
Product Marketing Department, IT Controller Center.
Yokogawa Electric Corporation
Published by Yokogawa Electric Corporation
2-9-32 Nakacho, Musashino-shi, Tokyo, 180-8750, JAPAN
Printed by
Yokogawa Graphic Arts Co., Ltd.
IM 34M6H25-01E
Blank Page

UT Link Module

Transcription

Similar documents

Super4 RS485 Relay Module Specification

Signtech Open Day - Jersey Chamber of Commerce

Lieutenant Kelly Cardoza (916) 843

Symphonics - FSG Australia

Deerhorn Proposal - Ciat

Alcoholmeter - BFS Pressroom Solutions

Piano Spec Sheet Template

Praharsha Pandarinath Sirsi