Serving the tunneling experts - The Future of Manufacturing



Serving the tunneling experts - The Future of Manufacturing
Number 2 | December 2015 |
Automation with LOGO! and SIMATIC S7-1200
Serving the
tunneling experts
LOGO! in the construction of
the Semmering base tunnel
GO! 2/2015 | Contents
Serving the tunneling experts
Holtermann Regeltechnik GmbH, Rietberg, Germany
Networking possibilities
Instrumentation and control
Electronic wheel truing
A well-rounded affair
Unger Kabelkonfektionstechnik GmbH & Co. KG,
Sehmatal, Germany, and Radsport Componenten
Vertriebs GmbH, Erfurt, Germany
Serving the tunneling experts
Holtermann Regeltechnik GmbH, Rietberg, Germany
Mobile building systems
Automation for mobile buildings
Berger Raumsysteme GmbH, Großpostwitz, Germany
Machine building
Using PLCs as data loggers
Eurolaser GmbH, Lüneburg, Germany
TIA Selection Tool
Faster configuration
Traffic control systems
Sending a signal
Ibotech GmbH & Co. KG, Hockenheim, Germany
Using message texts efficiently
Grill control
Cooked to perfection
Pottfeuer GmbH, Wetter, Germany
Cover photo: Holtermann
Simatic ET 200SP
More I/Os in a compact design
LOGO! web-based training
Multilingual e-learning
LOGO! CMK 2000
An intermediary between two worlds
Publisher’s notice
Editorial | GO! 2/2015
An omnipresent symbol of global connectivity, the Internet is fundamentally
changing our world. Cloud computing and Wi-Fi are now part of our
everyday lives.
Even – or especially – in automation technology, networking is making
inroads into more and more areas, from engineering and operation to
maintenance and service. Remote control, remote monitoring, and remote
services are no longer the preserve of the high-end sector.
Our LOGO! 8 logic modules, our smallest automation systems, feature an
Industrial Ethernet interface. This opens up a world of new communication
options based on TCP/IP and using the Simatic S7 protocol: for example,
to Simatic S7 or Simatic HMI, from LOGO! or to LOGO!, in combination
with communication modules, or for connecting to a company’s industrial
network. All LOGO! basic units with an Industrial Ethernet interface can be
addressed at access points via Wi-Fi, and the web server integrated into all
LOGO! 8 basic units makes monitoring and controlling LOGO! via Wi-Fi and
the Internet a simple matter. As examples, a grill chef can remotely control
the fan of his barrel smoker, and traffic signs automated using Simatic
S7-1200 can be monitored over the network.
And with the new KNX module for LOGO!, which we present on page 19,
the LOGO! modules can be used as smart controllers in integrated building
We hope the solutions presented here will be a source of inspiration for
new applications!
I hope that you enjoy reading about these new solutions.
Heinz Eisenbeiss
Head of Marketing and Promotion,
Industrial Automation Systems
Fotolia / S. Schurr
Unger Kabelkonfektionstechnik GmbH & Co. KG, Sehmatal, Germany,
and Radsport Componenten Vertriebs GmbH, Erfurt, Germany
A well-rounded affair
Electronic tools for diagnostic
tasks are part of the standard
equipment of car repair shops.
In bicycle repair shops,
however, the electronics thus
far mostly have been limited
to office PCs. That is now
changing with the use of
Simatic S7-1200 for truing
bicycle wheels.
nger Kabelkonfektionstechnik
GmbH & Co. KG, based in Sehmatal, Saxony, specializes in making
cables and wires using the latest production technologies. However, on behalf of the Erfurt bicycle wholesaler
Ra-Co GmbH, which also sells its ownbrand Cyclus Tools, Mike Schubert,
head of research and development at
“The bicycle technician places the
Unger, is working on a very different wheel in the Radonaut to measure it
matter with his team: “As is well known, electronically and then true it by hand,”
it’s possible to deform your bicycle’s explains the automation specialist. “Our
rim. The wheel ‘wobbles,’ the ride be- new, electronic method is much more
comes less comfortable, and the rim precise, theoretically down to the 5/100brakes don’t work as well.” That is when mm range, and the result can be accuthe wheel needs to be trued – the same rately checked and logged,” he adds. In
process as is used during the wheel’s August, Ra-Co and Unger presented a
manufacture when the hub and rim are preproduction sample at Eurobike, the
connected to the spokes. Truing means world’s leading trade fair for the bicycle
that the length and/or tension of the industry in Friedrichshafen, Germany.
spokes is modified by rotating the
spoke nipple to ensure that the wheel Trusted equipment partner
turns smoothly.
Schubert can look back on many years
Faster and more precise truing
of working closely with Siemens in
Chemnitz; as the owner of an engineerThis work is complex and time-consum- ing firm, he previously equipped proing for bicycle technicians. The radial duction systems with Simatic S7-300
and lateral runout of the wheel are read and Simatic S7-400 controllers. “In our
in and measured, for example, using case, the use of these controllers would
dial gauges. Schubert has developed a not have been appropriate: they can do
special aid for this procedure – the Ra- far more than we need and would be
too expensive for a mass product.”
Electronic wheel truing | GO! 2/2015
“Using TIA Portal, we can easily implement
menu navigation that the mechanic can
quickly master, and at the same time store
operating notes there.”
Mike Schubert, Head of Research and Development,
Unger Kabelkonfektionstechnik GmbH & Co. KG
The electronics originally produced
in-house could have performed the
measurements but would quickly have
come up against their limits if customers changed their requirements or
the system was expanded. “That’s why,
together with my Siemens contacts in
Chemnitz and Leipzig, I sought out an
alternative situated between a handmade solution and an industrial solution.
Here, I counted on the equipment supplier’s seamless system consistency
and the potential integration of a wide
range of applications, from drive technology to sensor systems.”
an electronic linear displacement sensor. The resulting analog value, in a
range between 0 and 10 V, is interpreted as a path by the Simatic S7-1200
PLC. The bicycle technician can read
the rim’s runout at the right, left, top,
High tech for the bicycle
repair shop
Exact analog value processing
Schubert was not disappointed. The
Simatic S7-1200 Basic Controller with
an analog SM 1231 signal module
for connecting displacement sensors,
combined with a Simatic KTP400 Basic
Panel, proved ideal in terms of price
and performance. “The 13-bit resolution of the SM 1231 enables exact processing of the 12-bit analog signals
from the displacement sensors,” says
Schubert. “The solution is reliable and
extendible, and fast, competent service
is ensured if a component should fail at
some point.”
How, though, does the measurement
work? Moving linear guides are
mounted on springs at the bottom of
the device. Together with a cylinder,
these guides enable mechanical determination of the wheel’s radial and lateral runout. The motion is recorded by
costing rates for the services on the
panel. “Once radial and lateral runouts
have been measured, the controller calculates the service costs for the customer when the bicycle technician
trues the wheel to a specific level of accuracy,” explains Schubert. “Not everyone needs a bike wheel aligned to a
tenth of a millimeter.”
The idea and its implementation were
well received at Eurobike. Initial orders
have already been received, and there
are even plans to extend the system.
“Customers asked if it would be possible
to also measure spoke tension. Our extendible, modular solution can accommodate this with little effort,” says
The Radonaut with the Simatic S7-1200 control
Schubert. He therefore sees the Raand KTP400 Basic Panel brings new technology
donaut as just the first use of modern
into the bicycle repair shop
control technology in a bicycle repair
or bottom with an accuracy of 0.1 mm shop. “We could also control other tools
on a bar cross shown on the Basic Panel. using the Simatic S7-1200 micro-PLC,”
He or she then calibrates those points he says, thinking ahead. The system’s
that deviate from the target value by expansion potential can be ensured via
tightening or loosening the spokes at the remote maintenance option, and
the spoke nipples.
updates can be carried out with ease.
Each step is documented on a report Electronic bicycle diagnostics has a
for the customer. If the mounted wheel bright future.
is turned a further full revolution by
hand, radial and lateral runout are measured again, and the values are shown
on the display, saved by the controller,
and can be printed out as required.
ally, these values should now all be
[email protected]
close to zero. The user can enter the
GO! 2/2015 | Machine building
The recorded operating data are clearly presented and help optimize the cost-effectiveness of the laser systems
Eurolaser GmbH, Lüneburg, Germany
Using PLCs as data
The processing and presentation of operating data serves as the
basis for efficient maintenance and for the process optimization of
innovative laser cutting machines. A microcontroller is the perfect
solution for what is an atypical task for it.
he trend toward individualization in the consumer sector has long affected the production
of low-cost items. The cost-effective manufacture of small quantities requires flexible, simpleto-operate tools that can also be easily maintained.
Laser cutters can be adapted for use on almost any
material. They operate without contact, are almost
wear free, and do not require tool changes or changeover time.
The company’s machines are used worldwide.
Christian Ehlers of the research and development department describes the particular challenges: “Initially, the long distances were sometimes a problem
for our service department. On some occasions, our
service engineers would arrive on-site to discover
that the only problem was that the emergency stop
had been pressed, meaning that their long journey
had actually been unnecessary.”
Cutting, engraving, marking
Remote diagnostics in real time
Eurolaser of Lüneburg, Germany, specializes in the
manufacture of CO2 laser systems for cutting, engraving, and marking. Combining various modules
results in a large number of potential applications.
Protective cell-phone covers in many different versions are just one typical product for the cutting machines; laser engraving is used on such diverse products as soccer boots and key chains.
Searching for the most competitive remote diagnostics solution, Mücahit Acar, also of research and development, came across a solution with Simatic
S7-1200. Here the controller is not used as a control
system in the proper sense of the word. Instead, it
collects and processes data before making it available for live monitoring on a specially designed website. Ehlers says, “Initially, only simple tables were
Machine building | GO! 2/2015
Operating costs under control
The versatile CO2 laser systems from eurolaser are used for
cutting, engraving, and marking
Malfunctions can be displayed both directly on the
machine and on any company PC. E-mails signaling
limit violations also can be configured and sent. According to Ehlers, another factor is that “the ratio of
the machine operating hours to the service life of the
laser can demonstrate optimization potential in the
course of operations. This enables us to support our
customers in the cost-effective operation of their
machines. The customer is able to recognize when
maintenance measures are required and has greater
planning security. If the customer is operating several of our machines, the Watchdog delivers reliable
comparative figures.”
The live monitoring is connected with hourly recording, storage, and graphical presentation of the
measured values. “Not only can our customers check
whether the ambient conditions are appropriate
during the runtime, but the parameters also can be
represented based on curves over the last 4,000
hours. This enables settings and workflows to be analyzed and the cost-effectiveness of the laser cutting
system to be further optimized,” continues Ehlers.
Continuous further development
provided for our service staff. But we soon realized
that it would definitely be useful to also make oper- The Watchdog is programmed such that it can be
used for all new eurolaser machines. The operator inating data accessible to our customers.”
And the idea of the Watchdog was born. Every terface automatically adapts to the machine and dislaser cutter from eurolaser is now delivered with a plays the relevant data. Ehlers justifies this strategy:
Simatic S7-1200 (CPU 1214) and the Watchdog func- “The development efforts are not to be underestion. Ehlers explains, “The machines can be used for timated. Ultimately, the controller must be proa very wide range of applications, in very different grammed in such a way that it can correctly interpret
installation locations, and by people with a variety of the operating states of the laser. For example, an indifferent qualifications. The machines are very ro- tentional shutdown may not be signaled as a malbust and user friendly. Nevertheless, as the most ex- function. With a standardized Watchdog, future
pensive element, the laser, does have certain humid- developments will generate costs only in one area,
ity and ambient temperature requirements. It is not namely, for modifications. All our machines are
just the actual service life that is relevant for the therefore able to offer the expanded functionality simaintenance intervals of the laser but also the length multaneously.” Future plans include the incorporaof time that the machine is turned on and during tion of status messages from the motion system into
which the laser is kept ready for operation. We have the Watchdog via TCP/IP. Acar, who is responsible for
therefore decided to take note of these parameters the programming, is enthusiastic: “The opportunities
and make them available to the customer for live that Simatic S7-1200 and TIA Portal offer for the
Watchdog application alone are enormous.” He and
The Watchdog operator interface is clearly laid out. Ehlers are in complete agreement that they also will
Fault signals are displayed in color and may be take advantage of the Simatic controllers’ core capae-mailed to the maintenance engineer. Regarding bilities for automation tasks in the future.
the configuration, Ehlers explains, “In principle, the
controller functions as a subsystem in the customer’s
company network, and access to the web server is
only possible from company PCs. Only when access
is specifically activated for us are we also able to read
data and take over or support the maintenance.
Write access is then also possible via the web server.
The emergency stop I mentioned can, of course, be
cancelled only on-site. But the fact that the fault was
detected by remote diagnostics made an expensive
[email protected]
journey unnecessary in this case.”
Note on industrial security: Suitable protective measures (including industrial security, e.g., network segmentation) must be taken to ensure safe operation
of the system. Further information about industrial security can be found on the Internet at
GO! 2/2015 | Traffic control systems
Ibotech GmbH & Co. KG, Hockenheim, Germany
Sending a signal
Highway construction sites see frequent accidents and are
despised by drivers because of the delays they cause. Mobile
LED congestion warning systems that automatically adapt to
traffic volumes help ease temporary congestion and improve
the traffic flow through construction sites.
onventional traffic management systems involve placing
large numbers of static warning
signs on the roadside. However, there
are so many that drivers are sometimes confused and distracted. “That
can be dangerous, especially on highspeed roads,” says Adem Bogocli,
CEO of road safety engineering services provider Ibotech GmbH & Co.
KG. So the company has developed a
solution that reliably collects up-tothe-minute traffic information and
presents real-time alerts on clearly
visible LED displays.
The roadside signs are composed of
LED elements displayed on boards approximately 3 meters square and robustly mounted on 5-meter-high trimasts with concrete bases. The planning office of the local highway
agency stipulates the locations in a
signage plan for each construction
site. As soon as the work is complete
and the safety measures are no longer
required, Ibotech removes the signs
and stores them, ready for deployment
at the next construction site.
Reliable detection of
free-flowing traffic
Solar panels mounted on the tops of
the trimasts charge the batteries powering the LED displays. To collect accurate traffic data, lbotech uses sensors
featuring passive infrared (PIR) technology that detects changes in traffic flow
very reliably even in bad weather con-
Mobile LED congestion warning systems aid traffic flow through construction sites
Traffic control systems | GO! 2/2015
“We very much appreciate the high
performance and failsafe operation
of the Simatic S7-1200 controllers.
Despite the often harsh operating
system failure to date.”
Adem Bogocli, CEO, Ibotech GmbH
ditions. The sensors are mounted on
the sides of the trimasts and are designed to detect across multiple lanes.
The contrast in radiation emitted by a
vehicle traveling into or through the
sensing ranges of the sensors delivers
the information to control the alerts.
The sensor records the exact position,
speed, and length of each vehicle passing through its range and detects the
presence of stationary vehicles when
there is congestion. The PIR sensors are
also powered by the solar panels.
All the sensors and actuators in the
LED traffic signage system are routed
via the Simatic S7-1200 DC/DC/relay
controllers, which ensure maximum
flexibility and fault-free operation of
the LED congestion warning systems.
The controllers are housed in enclosures below the LED displays together
with the communication components.
Data exchange between the controllers
and sensors is via the RS485 interface
of the CM 1241 communication module.
Ibotech programmers have developed
an algorithm that calculates the average speeds of the vehicles and switches
the relays of the LED displays based on
the results. The switching functions of
the PLC are configured in Simatic Step 7
The data buffer in the controller
stores the vehicle data at the programmed polling intervals and visualizes the measurement results via
Simatic WinCC Runtime Advanced. The
visualization software displays the
events and states occurring at the var-
ious measuring points directly on a PC
in the control room in Hockenheim.
PLC activates congestion warning
Siemens AG / J. Koch
conditions, we have not had a single
ample, a congestion warning is automatically activated. Once the average
speed is back above 70 km/h, the warning disappears.
To retrieve the sensor data, Ibotech CEO Web server for mobile monitoring
Bogocli connects to the variable mes- of traffic data
sage signs from the control room via a
secure virtual private network. The In the three years since Ibotech brought
traffic conditions recorded by the sen- its first variable message sign to market,
sors are evaluated as hydrographs and the signs have demonstrated their perdisplayed on-screen together with the formance capabilities in many applicalatest data for the day. Each vehicle is tions. The now upgraded version enclearly identified as a car or a truck, and ables authorized users to communicate
the distances between the passing with the installations over the Internet
vehicles are also recorded exactly. via the web server built in to the Simatic
The LED display has its own controller S7-1200 controller. Bogocli explains,
that controls the individual elements. “We have enhanced the applications, for
The controller, which is operated via example, to enable monitoring and
the digital outputs of the micro-PLC, control of PLC functions via Wireless
switches the display as required. The LAN and over the Internet using the
images are projected via XML using a built-in web server. Traffic data reports
special software program and are can be viewed instantly on a PC, smartstored in the LED controller.
phone, or tablet through the web
As a vehicle approaches the construc- browser.”
tion site, advance warning flashers first
LEDs have proved to be an outstandalert the driver that there is an obstruc- ing solution for construction site applition ahead. At the start of the construc- cations, and the highway agencies view
tion site, LED-lit variable message signs them positively. Ibotech is currently the
with brightly illuminated wording then only vendor of variable message signs
indicate a risk of congestion or a traffic with switchable LED displays to be cerjam. Depending on the traffic condi- tified by the German Federal Highway
tions, other signs indicate information Research Institute.
such as the maximum speed for traffic
passing through the construction site.
The messages are displayed automatiINFO AND CONTACT
cally, controlled according to the
gramming. If the average speed falls
[email protected]
below 50 km/h for two minutes, for ex-
Note on industrial security: Suitable protective measures (including industrial security measures, e.g., network segmentation) must be taken to ensure safe
operation of the system. Further information about industrial security can be found on the Internet at
GO! 2/2015 | Know-how
Using message
texts efficiently
Logic modules are often used when modernizing conventional control systems.
In addition to easy configuration and flexibility, they offer visualization and
operator guidance by text display. Other, less familiar, solutions are possible in
addition to the display of actual-value text in messages.
he display built in to the LOGO! 8 offers space for
six lines of 16 characters each, while the external
TDE has a capacity of up to 20 characters per line
(Figure 1). Using the ticker function, the user can expand the content of a message to 32 or 40 characters
per line, respectively (Figure 2). There is a choice of
three colors for the backlighting. This enables messages to be structured as
• standard, with white background;
• warning, with orange background; or
• alarm, with red background.
Programs migrated from earlier LOGO! versions can be
upgraded to a more user-friendly operator control
solution with just a few minutes’ programming.
Figure 1: Configuring a message for the base unit with no ticker text
(6 lines / 16 characters)
Figure 2: If a message is configured only for the TDE, 6 lines of
20 characters each are available. The ticker function doubles the
number of characters per line
Keeping an eye on alarm messages
Have you ever taken a closer look at the message text
function block? It offers a number of features providing low-cost monitoring and control functionality.
Sporadic alarms occurring just briefly are often not
identified because no one is viewing the display at the
time. If they are not noticed, more serious malfunctions can result. This is where the reset function helps.
It ensures that the message remains on view until the
message system is reset by pressing the OK button on
the base unit or external display – even if the cause of
the alarm, such as a high temperature value, has returned to the normal range and the alarm is no longer
Displayed dates and times indicate when the alarm
was triggered for the first and last times. A counter indicates how often the alarm has occurred in the meantime.
All pictures: Siemens AG
Message merging
Figure 3: A second
character set has been
activated. Flag 27 is
used to toggle
between them
The character set function enables two messages to be
merged in the chart. This allows the message to be
presented in two languages, depending on the operator. The two messages can be toggled by activating flag
Know-how | GO! 2/2015
27 (Figure 3). However, the message in the second
character set may contain additional information
for servicing that is not relevant for the operator.
Actual values (analog values or counter values)
can be displayed as a vertical or horizontal bar
graph as well as numerical values. That makes the
message easier to read in most cases. Whereas previously two separate message texts were needed to
display the “Motor ON” and “Motor OFF” messages,
each having to be actuated based on the output signal, up to four status messages can now be merged
in a single message text (Figure 4). It is possible to
“toggle” based on the input or output states, saving
resources and making the program clearer.
Outputs of individual function blocks can even be
used to actuate these status indicators. In LOGO! 8,
larger area symbols also can be configured (Figure 5).
Web server permits plant monitoring
by smartphone
A highlight of LOGO! 8 is the integrated web server.
After connecting LOGO! 8 to a low-cost Wireless
LAN access point from a specialist reseller, the operator can monitor and control a plant from a smartphone or tablet without need of HTML programming. This is again enabled by the message text
and by selecting the web server from the display
(Figure 6). The message is then also displayed on a
smartphone. If so programmed, the smartphone’s
function keys can be used to control the system directly. After the program is downloaded, web server
access must be enabled directly in LOGO! 8 and protected by a password. The function keys of a device
such as a smartphone or tablet can then be used,
regardless of whether a TDE is connected to the
hardware. For example, shutters can be opened or
closed as part of a building automation application
(Figure 7).
Figure 4: This enables status indicator messages to be defined based
on various signals
Figure 5: Under the °C
symbol there are additional
symbols for the cursor
buttons and symbols to
display large characters
Figure 6: The web server can be selected in the message destination
field under Properties
[email protected]
Figure 7: Display on smartphone, tablet, or PC
GO! 2/2015 | Grill control
Pottfeuer GmbH, Wetter, Germany
Cooked to perfection
Alongside such perennial favorites as sausages and steaks, smoking in the
style of American barbecues is growing in popularity in Germany. This
process, however, demands careful preparation. Grill caterer Markus
Mizgalski lets LOGO! do some of the work involved over the many hours
needed to cook the meat. He is impressed by the logic module’s flexible
expansion options.
efore the American classic of pulled pork can be
prepared, necks and shoulders of pork must be
slow cooked for up to 20 hours in a smoker.
Only then can the tender meat be “pulled” and enjoyed, for example, with barbecue sauce and coleslaw, in a sandwich. Pulled pork, beef brisket, and
spare ribs are considered by fans the “holy trinity” of
barbecues. They are among the many specialties
that grill specialist pottfeuer GmbH offers at family
or company parties.
As hired barbecue experts at larger events, the
pottfeuer managing directors Axel Kähne and
Markus Mizgalski – supported by an administrative
assistant and a pool of event assistants – travel all
over Germany. They bring everything the customer needs with them, including the barbecues,
tents, serving tables, cutlery, and ingredients. And
then they grill live before the guests’ eyes. The
company is based in Wetter in the Ruhr, where
pottfeuer also organizes barbecue seminars and
operates a store selling accessories and meat. The
experienced IT journalist Mizgalski also writes articles and offers services that go beyond barbecue-related matters.
Grill control | GO! 2/2015
Maintaining a constant temperature
tem via the integrated web server and the Internet
or WLAN using a PC, tablet, or smartphone: “We
integrated LOGO! 8 into our company network via
a network port and a WLAN bridge; it can be directly activated via an internal IP address from any
browser. This means that, in principle, we can
check up on things from anywhere. That simplifies
our work and gives us much more time and flexibility in our daily routines.”
The meat cooks for up to
20 hours in the barrel
smoker. LOGO! makes for
less work for the grill chef
and ensures the correct
temperature in the smoker
Pottfeuer / M. Mizgalski
“Of course, we can’t cook the meat for pulled pork or
even spare ribs in a barbecue smoker on the customer’s premises; that just takes too long,” explains
Mizgalski. “We do this in advance on our own terrace
and then only prepare the meal with the cooked
meat when we’re with the customer.” The traditional
barrel smoker consists of a furnace for wood or coal
and the cooking space. “The challenge is to maintain
a constant temperature of between 100°C and 120°C Straightforward programming
in the cooking space for up to 20 hours. And it’s good
if you can check the temperature occasionally, ide- The self-taught Mizgalski also did the programming
with LOGO! Soft Comfort himself: “Of course, I
ally also from off-site.”
In the past, he and his partner structured their rou- could have received assistance from Siemens. But
tines so that one person would check the tempera- when I get down to tackling something on my own,
ture in the smoker on the terrace every two hours or I’m very persistent and want to understand every
so, opening or closing the ventilation flaps by hand
as necessary. Although there are systems with temperature sensors and temperature-controlled fans
for automated control of the heat in the cooking
space, Mizgalski was first genuinely fired with enthusiasm on finding out about LOGO! 8 while enjoying
an evening beer with an acquaintance he knows
from his work as an IT journalist. “I’m not an expert,”
he says, “but am good at technology and enjoy tinkering, and I immediately came upon the idea of a
barbecue controller – one that also offers remote access options, is extremely flexible and expandable,
and goes far beyond simple temperature control.
LOGO! offers everything we need. Using the logic
module, we can measure, control, and connect everything to our internal network.”
Independence thanks to remote access
No sooner said than done. Mizgalski got himself a
12-V LOGO! 8 basic unit with an integrated display, a
LOGO!Power supply unit, and an AM2TD extension
module for connecting the PT100 and PT1000 temperature sensors – hardware that he installed in a
mounting rail box. One of the temperature sensors
measures the temperature in the cooking space, and
the other – an immersion thermometer – the temperature inside the piece of meat. The latter, after all,
makes all the difference in the quality of cooked food
such as pulled pork. The two temperatures are shown
on the display.
With this essential equipment, he undertook a
proof of concept and created a basic solution with
a simple smoker equipped with an electric fan. If
the temperature in the cooking space falls below a
set threshold, 90°C in the test, LOGO! switches the
fan on. The fan blows air into the embers until the
temperature returns to its target value of 110°C.
LOGO! then switches the fan off again.
What particularly impresses Mizgalski, however,
is the convenient remote access to the control sys-
aspect of it.” He found the simple method of dragging and dropping modules, the simulation of program routines, and the heating control and temperature measurement project examples on the Internet helpful and convenient when programming
with the LOGO! Soft Comfort software.
Mizgalski has many more ideas he would like to
implement for various types of smokers using
LOGO! For example, LOGO! could additionally control the demand-driven transport of wood pellets
on a screw conveyor in the smoker. He also can
imagine it controlling a servomotor for a three-step
rotary knob.
[email protected]
Note on industrial security: Appropriate security measures (e.g., network segmentation) must be taken to ensure secure operation of the system. More
information about industrial security can be found on the Internet at
GO! 2/2015 | Instrumentation and control engineering
Holtermann Regeltechnik GmbH, Rietberg, Germany
Serving the
tunneling experts
LOGO! 8 logic modules affordably and reliably meet the
requirements for monitoring and controlling heating
technology for concrete mixing and hardening during
tunnel construction.
emmering, Austria, has always they cool down to the ambient tempera- have been excessive here, he says, addbeen a popular tourist destination ture in an open area and are stored there ing that the users have managed very
in both the summer and the win- for use.
well with the logic module. Customer
ter. The town, located on a north-south
service is also of central importance.
transport corridor, is also of major eco- Ideal system for switching and
“We prepare the applications such that
customers can independently commisnomic importance. Growing rail freight control tasks
transport has resulted in the planning
sion the systems on-site following a
of a new, 27.3-km railway tunnel pass- We-Ho Beton-Heiztechnik GmbH, based short briefing,” explains Holtermann.
ing underneath the northern Alpine in Borgholzhausen, Germany, special- Martin Hartmann, who is responsible
peaks between Golggnitz in Lower izes in systems for producing process for planning at Holtermann RegeltechAustria and Mürzzuschlag in Styria. The heat and heating energy. These sys- nik, adds, “Our systems are highly cusSemmering base tunnel has been under tems include container heating plants
construction since 2012 and, on com- for tunneling projects in which large The TDE displays are clearly integrated
pletion in 2026, will be the key link on quantities of concrete are used. The in the control cabinet door
the Baltic-Adriatic axis for passenger systems are equipped with controllers
and freight transport.
for self-optimizing temperature control.
Austrian Federal Railways and its con- Together with the pressure vessel of the
tracted construction companies are mobile heat-generating station, these
using prefabricated concrete sections are installed in a container. Holtermann
to support the inside of the tunnel. The Regeltechnik, a company specializing in
concrete parts, however, are not pro- building automation and control techduced at a plant for precast units be- nology for heating and ventilation syscause their size would make them im- tems, is responsible for the control cabpossible to transport by road. Instead, inet construction and all the instrumenthey are manufactured on-site in spe- tation and control (IC) engineering in
cially erected halls. Once the concrete the heating plants for the tunnel conhas been poured, the sections, together struction project.
with the formwork, are moved to a dryThe IC engineering is based on the
ing hall preheated to 80°C, thereby ac- LOGO! 8 logic module, which, accordcelerating the drying process. Because ing to managing director Martin Holterthe concrete sections must not be mann, was “exactly the system we
cooled too quickly, they are then trans- needed to affordably and ideally perported to a second drying hall with a form the switching and control tasks on
temperature of 50°C. In a third step, this project.” A larger controller would
Instrumentation and control engineering | GO! 2/2015
tomized. During commissioning or in
the event of a modification, for example, users may have to adjust the settings. That’s why, in addition to understanding the system, it’s helpful for
them to bring along basic knowledge of
control technology. LOGO! 8 can then
be used to its best advantage.” Anyone
who needs support, however, can contact the IC engineering specialist’s telephone support or receive on-site assistance from service technicians.
Prefabricated concrete
sections for the
tunnels are stored in
open areas (top)
The control cabinets, designed for a
supply of up to 1,600 A, are installed
together with the heating systems in
the container heating plants. The logic
modules are attached to a door mount,
and the TDE displays are integrated in
a control cabinet door. “The controller
function of the LOGO! 8 is particularly
useful to us because we frequently work
with control circuits,” says Hartmann.
“We fit several controllers on the analog
outputs and can then easily perform a
wide range of tasks. The logic module
is extremely flexible when it comes to
quickly modifying individual functions.”
To ensure that the concrete sections
comply with legal and safety-related requirements and the finished tunnel exactly meets structural requirements,
LOGO! 8 continuously monitors the
temperatures for the drying process.
Hartmann prepares the control diagram
for the steam boiler system, clearly indicating the processes and tasks of the
controller. For example, it shows the
steam boiler with safety devices, the
control sensor, the steam control, and
the steam valves for the concrete aggregates. At the same time, the flow diagram forms the template for programming. Using the LOGO! Soft Comfort
Full range of tasks covered
View of a steam boiler
software, programming the logic mod- controls the heating of the aggregates
ules and simulating the function se- (gravel, cement) with superheated steam.
quences is an easy affair. The software The various components flow into a
allows Hartmann to draw contact and mixing funnel and are heated there to
function plans by selecting preconfig- 170°C using hot steam. The heated maured function blocks and combining terial can be processed at outside temthem by dragging and dropping.
peratures of even –40°C – when water
In addition to steam boiler control, freezes and pouring concrete is imposlevel control, temperature control in the sible.
steam boiler, and condensate feed-in,
LOGO! 8 is responsible for controlling
the heating registers. Sensors in the
halls measure the temperature; LOGO!
switches the heating on or off
ing on the required ambient [email protected]
ture. The logic module’s relay function
Note on industrial security: Appropriate security measures (e.g., network segmentation) must be taken to ensure secure operation of the system.
More information about industrial security can be found on the Internet at
GO! 2/2015 | Mobile building systems
Berger Raumsysteme GmbH, Großpostwitz, Germany
Automation for
mobile buildings
A vendor of mobile building systems utilizes the great flexibility
and versatility of the LOGO! microcontroller for its disabled toilet
facilities. The logic module controls all the access and emergency
call systems of an installation at the botanical gardens in Rostock,
or Berger Raumsysteme GmbH, the customer
really is king. For the past 16 years, the 14-employee company based in Großpostwitz in the
German state of Saxony has been building tailormade portable building solutions. Its products include sanitary facilities as well as mobile saunas, carports, sales stands, and office and residential units.
Among its key products are high-quality mobile toilets for local authorities, transport companies, golf
courses, and campsites. There are currently more
than 40 mobile toilet units, in a variety of models,
lined up in the company’s yard – as sales samples and
as units for rent. The specialist builder’s units are
now much in demand all over Europe.
A variety of control and automation systems can
be installed, based on customers’ wishes or in line
with local regulations for public sanitary facilities,
from coin slot machines and door openers, to vacant/
occupied indicators and occupancy time meters, to
emergency call systems for disabled toilets as stipulated by the DIN 18040-1 standard. “For a long time,
we purchased relay controllers and circuit boards,
which we then had to painstakingly assemble,” recounts company manager and qualified electrician
Steffen Seifert. “For the past three years we have
been independently running LOGO!, and we have enhanced our solutions from unit to unit.”
Seifert is thoroughly pleased with the possibilities
the logic module offers: “LOGO! is small and low cost
and will meet all our needs into the future too.” That
is demonstrated in a highly practical way by a recent
installation for the botanical gardens in Rostock, featuring a combined women’s and disabled-access
cabin and a men’s cabin. A LOGO! 8 12/24RCE logic
module with a DM16-24R digital expansion module
and a LOGO!Power power supply unit combine to
control multiple processes in a highly reliable setup.
The system also can be reprogrammed, such as to
adapt the opening times to those of the botanical
gardens or – with an added LOGO! CMR module – to
upgrade the emergency call control with remote
alarm transmission.
Advanced access control
LOGO! first controls access to the cabin. If it is vacant,
the light above the door is lit green, and the electric
door control keeps the door closed. When a user inserts a 50-cent coin into the slot or a disabled person uses the special access key, LOGO! activates the
door opener, unlocking the door for 8 seconds. An
externally mounted mechanical door closer closes
the door, and the light turns red, indicating “occupied.” The controller also blocks the coin machine
once a coin has been inserted in the slot, so no more
can be inserted. When the user wishes to exit the
cabin, he or she presses a large-format door-opener
button. The door opens again for 8 seconds, then
closes automatically and is kept closed by the door
control. The light turns green again.
LOGO! also features a timer to monitor occupancy
of the cabins, with the maximum time currently limited to 30 minutes. If a user does not exit the cabin
after 30 minutes, the door is automatically released
and the coin machine re-enabled. A visual and acoustic signal inside the cabin warns the occupant one minute before this happens. LOGO! also permits opening
and closing times to be set flexibly in line with the
opening hours of the botanical gardens. When the gardens are closed overnight, between 6 p.m. and 7 a.m.,
and on Mondays all day, the toilets are out of service,
though it is possible to exit from them at any time.
Standards-compliant emergency call system
In the disabled-access cabin, a pull-and-press emergency call button triggers a two-minute acoustic
alarm, time limited in accordance with noise control
The toilet units from Berger Raumsysteme GmbH are
mobile and usable anywhere
regulations, as well as a continuing visual alert. A red
light and alarm signaler are located above the door
on the left. An acoustic signal and a visual indicator
(reassurance lamp) inside the cabin tell the person in
need that help is being called. LOGO! additionally
disables the door control so that the door is merely
ajar and can be opened at any time. A reset button
on the inside of the door cancels the emergency call
and reactivates the system.
Because there is always someone on-site at the botanical gardens, it is not necessary for the alarm to
be relayed. “Nevertheless, that would be quite easy
thanks to the LOGO! CMR communication module,”
Seifert stresses. “We have in fact implemented such
a system at another location – a public toilet facility
in Ratzeburg. Emergency calls are sent by SMS text
message to a security company and immediately relayed to the emergency services.”
Berger Raumsysteme GmbH
Berger Raumsysteme GmbH
Mobile building systems | GO! 2/2015
LOGO! reliably controls access
units, for example. Seifert adds, “In one installation,
at the customer’s request, we configured different
opening times, which the customer is able to program simply by pressing a button on the LOGO! TDE
external text display.”
Not least, Seifert appreciates the “pleasingly simple” drag-and-drop programming using LOGO! Soft
Comfort. And if he has any questions, the hotline is
there to help. “It works great!” he says. If there is no
local electrical contractor available to carry out necessary reprogramming, Seifert simply downloads the
upgrade to a standard SD card and sends it to the
customer. “All the customer then has to do is insert
the SD card into the slot on the LOGO! unit to upload
the program.” However, he is also looking to make
use, sooner or later, of the remote service and remote programming options.
Easy programming and reprogramming
The coin mechanism could additionally be monitored
by a contact to guard against theft. Also, if the customer so wished, LOGO! could initiate the flush as a
self-cleaning process when the user enters the cabin
or activate the heating. The display can indicate the
opening times and the open/closed status of the
[email protected]
GO! 2/2015 | Products
Simatic ET 200SP
More I/Os in a compact design
ing and disconnecting of cables. In addition, two- or three-conductor sensors
can be connected directly to the terminal strips with no additional hardware.
Components such as the Simatic
ET 200SP Energy Meter open up new
possibilities, including energy consumption metering. The expanded
functions with Simatic ET 200SP also
offer the optimal value for money to
which Simatic S7-1200 users are
Siemens AG
f more I/Os are needed in a plant than
are allowed by the maximum of eight
signal modules connectible to a
Simatic S7-1200 (CPU 1217C), or if the
I/Os are spread over a large area, the
new basic interface modules of the
Simatic ET 200SP distributed I/O system
offer a good solution. These compact
connection modules feature two
integrated RJ45 ports for setting up a
line structure, for example. The full
ET 200SP range can be connected to
the modules and used by the Simatic
S7-1200. The new design and push-in
clamping technology facilitate the wir-
LOGO! web-based training
TIA Selection Tool
Faster configuration
ith its web-based LOGO! 8 training, Siemens supports users
with clearly structured training
courses ranging from basic knowledge
to professional project planning.
The existing range of seven language
options has been extended to include
Czech, Polish, Portuguese, and Dutch.
ith the plant configuration
functionality of the TIA Selection Tool, automation stations
featuring Simatic S7-1200 can now be
assembled even faster. Just specify the
quantity of I/Os, and the corresponding
components are automatically set up.
The appropriate Simatic HMI panel can
be selected at the same time as well.
The programming software is built in.
The identified devices are set up in
the TIA Selection Tool, and the required
components are entered in the order
list. The list can be forwarded directly
to the Siemens Industry Mall to order
the components. This eliminates input
errors and enables cost estimates to be
drawn up faster.
Siemens AG
Siemens AG
Publisher’s notice
LOGO! CMK 2000
An intermediary
between two worlds
ith the new LOGO! CMK 2000 communication module, LOGO! 8 can
now be operated as an intelligent
controller within the KNX building automation system. The communication module is
connected to LOGO! 8 via a simple Ethernet
connection. This means that the entire LOGO!
hardware configuration can be used for KNX:
24 digital inputs, 20 digital outputs, 8 analog
inputs, and 8 analog outputs.
Projects are made more flexible, as up to 50
communication objects can be configured via
KNX independently of their input and output
points. LOGO! user programs can run independently of KNX, though LOGO! is also able
to process signals from KNX sensors and industrial sensors as well as control actuators
on LOGO! and/or on KNX. LOGO! can be used
in the KNX system for time and date synchronization as both master and slave.
The examples published in our magazine are suggestions that
professionals can use as solutions for their own automation
tasks. Proper use of LOGO! to control electrical systems and
equipment requires knowledge of, and compliance with, the
relevant laws, official safety regulations, standards, and procedures. Compliance must also be ensured with national regulations relating to accident prevention, the construction of electrical and mechanical systems, and electromagnetic compatibility as well as with relevant standards and safety regulations
specific to the application.
LOGO! may be installed and wired only by qualified professional electricians. Qualified professionals are personnel who
are authorized to commission, ground, and label equipment;
systems; and circuits in accordance with the standards of safety
technology, and who are aware of – and follow – generally
accepted technical rules as well as the applicable standards and
Failure to comply with these instructions may result in considerable risk to people and assets.
The manufacturer accepts no liability for improper use contrary to these safety instructions.
As a tool for getting to know the KNX system,
the KNX Association’s website provides a free
version of ETS5 with which five devices per
project can be configured.
GO! 2/2015
Siemens AG
Digital Factory Division
Factory Automation
Gleiwitzer Straße 555
90475 Nuremberg
Responsible for technical content:
Heinz Eisenbeiss
Editorial chair:
Jutta Pfister
Publishing house:
Publicis Pixelpark Publishing
Postfach 32 40, 91050 Erlangen,
[email protected]
Siemens AG
Editors: Dorit Gunia,
Robert Engelhardt, Marion Schwab
The following products are registered
trademarks of Siemens AG:
ET 200, S7-300, S7-400, S7-1200,
STEP, TIA Portal, Totally Integrated
Automation (TIA), WinCC
If trademarks, trade names, technical
solutions, or similar are not listed
above, this does not imply that they are
not registered.
The information provided in this
magazine contains merely general
descriptions or characteristics of
performance, which in the case of
actual use do not always apply as
described or which may change as a
result of further development of the
products. An obligation to provide the
respective characteristics shall exist
only if expressly agreed in the terms of
GO! is published twice a year
Volume 19
© 2015 by Siemens Aktiengesellschaft
Munich and Berlin.
All rights reserved.
Simply ingenious. Simply more.
The logic module
A new design, new hardware, new software: The perfect
intelligent logic module for switching and control tasks in
small-scale automation projects has launched the next
generation! With LOGO! 8, it is even faster, easier, and
more convenient to implement automation solutions for
simple machines or systems, in building automation, and
for applications in the private sector. This new LOGO! generation accommodates virtually every demand of customers with simplified handling. Impressive features include:
• Innovative LOGO! display: twice as many characters per
message for clear formulation of message texts and
with selectable backlighting, such as red, to optically
emphasize the current alarm status
• Integrated Ethernet interface for the entire LOGO! 8
product family: communication and networking are
easier than ever before
• Remote communication via cellular phone network:
text message communications for easy alerts and
remote control
• New external text display: more than twice as many
characters as before and more options thanks to two
Ethernet interfaces
• New backward-compatible software in a new design:
ingeniously simple operation, configuration, and programming in single and network mode
Answers for industry.

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