User Manual

LOGO! installation and wiring
2.1 Modular LOGO! setup
LOGO!
Manual, 06/2014, A5E33039675
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Carrying out tests
You must ensure safety in your plant.
Before finally commissioning a system, carry out complete functional testing as well as all
the necessary safety testing.
Also, test for any predictable faults that can occur. This means that you will avoid any danger
to the plant or to people during operation.
Risks
In all cases where the occurrence of failures can result in material damage or injury to
persons, take special measures to enhance the safety of the installation - and the
application. System-specific and special regulations exist for such applications. Follow these
regulations exactly when installing the control system (for example, VDE 0116 for burner
control systems).
For electronic control equipment with a safety function, the measures that you must take to
prevent or rectify faults are based on the risks involved in the installation. Beyond a certain
degree of hazard the basic measures mentioned above are not sufficient and you must take
additional safety measures for the controller.
Important information
Follow the instructions in the operating manual exactly. Incorrect handling can render
measures intended to prevent dangerous faults ineffective, or generate additional sources of
danger.
2.1
Modular LOGO! setup
2.1.1
Maximum LOGO! network setup
Maximum LOGO! 0BA8 network setup
LOGO! 0BA8 supports SIMATIC S7 communication over a 10/100 Mbit/s TCP/IP Ethernet
network.
A LOGO! 0BA8 device can support the following
network connections:
● A maximum of 16 TCP/IP-based S7 communication connections with the following
devices:
– Additional LOGO! 0BA8 devices
– SIMATIC S7 PLCs with Ethernet functionality
– A maximum of one SIMATIC HMI that supports Ethernet communication with
networked S7 PLCs
There are two types of connections available for S7 communication, static connection
and dynamic connection. For the static connection, the server reserves the required
resources for the connected client to ensure stable data transfer. For the dynamic
connection, the server responds to a communication request only when free resources