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Supplementary information
16.9 Communication via S7 connections
Configuring connections
Redundant connections between the point-to-point CP and the fault-tolerant system are not
necessary.
Figure 16-12 Example of connecting a fault-tolerant system to a single-channel third-party system via
Figure 16-13 Example of connecting a fault-tolerant system to a single-channel third-party system via
Response to failure
Double errors in the fault-tolerant system (i.e., CPUa1 and IM 153) and a single fault in the
third-party system lead to a total failure of communication between the systems involved.
This can be seen in the previous figure.
244
switched PROFIBUS DP
PROFINET IO with system redundancy
CPU 410-5H Process Automation/CPU 410 SMART
System Manual, 10/2013, A5E32631667-AA
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