Configurations and Help with Selection
2.3 Configuration Variants for Fail-safe Systems According to Availability Requirements
Safety Engineering in SIMATIC S7
2-12
System Manual, 04/2006, A5E00109529-05
Configuration Example of S7 Distributed Safety: Single-channel I/O (Distributed Configuration with
Copper Cable)
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Figure 2-8
S7 Distributed Safety with Single-channel I/O (PROFIBUS DP, Copper Cable)
Distributed Configuration of S7 Distributed Safety and PROFIBUS DP with Fiber-optic Cable
The following are required to configure PROFIBUS DP with fiber-optic cables:
•
One CPU 416F-2, CPU 31xF-2 DP, CPU 31xF-2 PN/DP or IM 151-7 F-CPU
•
One PROFIBUS DP line
•
Fail-safe I/O, for example:
–
One ET 200M with:
IM153-2 FO, F-SMs, and, if necessary, standard SMs,
safety protector (required for SIL3/Category 4 applications only if F-SMs and standard
SMs are used together in an ET 200M)
–
One ET 200S with:
IM 151-1 HIGH FEATURE or IM 151-7 F-CPU,
fail-safe modules, and, if necessary, ET 200S standard modules
–
One ET 200pro with:
IM 154-2 HIGH FEATURE,
fail-safe modules, and, if necessary, ET 200pro standard modules
•
Components for connecting the F-CPU and fail-safe I/O to the fiber-optic cable, for
example, OLM/OBT
