Siemens SIMATIC S7-1500 System Manual page 121

Redundancy scenario
①
②
③
④
⑤
⑥
⑦
⑧
Figure 5-33 Failure of the two PROFINET lines between two R1 devices in a line topology
S7-1500R/H redundant system
System Manual, 11/2022, A5E41814787-AD
Primary CPU (S7-1500H)
Backup CPU (S7-1500H)
Two fiber-optic cables (redundancy connections)
PROFINET cable (line topology 1)
PROFINET cable (line topology 2)
IO device ET 200SP HA
PROFINET lines → interrupted
IO device ET 200SP
Application planning
5.4 Redundancy scenarios
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