Application planning
6.3 Configuration versions
S7-1500R/H redundant system
154 System Manual, 01/2024, A5E41814787-AF
Not recommended configuration variants
The following configuration variants are not recommended:
Configuration variant 1
The H-CPUs are each configured in a separate PROFINET ring 1 and 2. Some or all R1 devices
are connected to these PROFINET rings via 2 switches. The R1 devices themselves are
connected via a line topology.
In this configuration variant, the availability of the media redundancy of the PROFINET rings is
limited, since the R1 devices in the lower-level line topology do not benefit from the
PROFINET ring.
Two fiber-optic cables (redundancy connections)
PROFINET cable (PROFINET ring 1)
PROFINET cable (PROFINET ring 2)
PROFINET cable (line topology)
IO device ET 200SP (with system redundancy R1)
Figure 6-16 Configuration variant 1
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