Siemens SIMATIC S7-1500 System Manual page 152

S7-1500H configuration with S2 devices and switch in a line topology
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②
③
④
⑤
⑥
⑦
⑧
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Figure 6-14
Note
If the AR to the backup CPU fails in a line topology (e.g., due to line breakage), then the
redundant system must synchronize less data. Result: The cycle time is reduced.
S7-1500R/H redundant system
System Manual, 01/2024, A5E41814787-AF
CPU 1
CPU 2
Two fiber-optic cables (redundancy connections)
IO device ET 200MP (with system redundancy S2)
IO device ET 200SP (with system redundancy S2)
Switch
PROFINET cable (line topology)
HMI device (switched S1 device or S2 device)
PROFINET cable (additional line topology)
S7-1500H configuration with S2 devices and switch in a line topology
Application planning
6.3 Configuration versions
151