Application planning
6.3 Configuration versions
S7-1500R/H redundant system
System Manual, 01/2024, A5E41814787-AF
151
S7-1500H configuration with S2 devices and switch in a line topology
Two fiber-optic cables (redundancy connections)
IO device ET 200MP (with system redundancy S2)
IO device ET 200SP (with system redundancy S2)
PROFINET cable (line topology)
HMI device (switched S1 device or S2 device)
PROFINET cable (additional line topology)
Figure 6-14 S7-1500H configuration with S2 devices and switch in a line topology
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.
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