Communication Options
3.2 Overview of Safety-Related Communication
Safety Engineering in SIMATIC S7
3-2
System Manual, 04/2006, A5E00109529-05
3.2
3.2
Overview of Safety-Related Communication
Communication Overview
The following figure illustrates the communication options for the F-systems S7 Distributed
Safety or S7 F/FH systems.
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Figure 3-1
Overview of F-System Communication
Table 3-1
Communication Options
No
.
Communication
Between ...
And ...
Safety-Related
See Section ...
1
Safety program in
F-CPU
Standard user program
in F-CPU
No
"Communication between
Standard User Program
and Safety Program"
2
Standard user
program in F-CPU
Safety program in
F-CPU
No
"Communication between
Standard User Program
and Safety Program"
3
F-runtime group
F-runtime group
Yes
"Communication between
F-Runtime Groups"
4
Safety program in
F-CPU
F-I/O
Yes
"Communication between
F-CPU and F-I/O"
5
Safety program in
F-CPU
Safety program in
F-CPU
Yes
"Safety-Related CPU-CPU
Communication"
6
Standard user
program in standard
or F-CPU
Standard user program
in standard or F-CPU
No
CPU manual
7
Safety program in
F-CPU
Standard user program
in standard or F-CPU
Communication
is not possible
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