Siemens SIMATIC S7-1500 System Manual page 163

Application planning
6.3 Configuration versions
S7-1500H configuration with R1 devices in a line topology
①
②
③
④
⑤
⑥
⑦
Figure 6-21
162
CPU 1
CPU 2
Two fiber-optic cables (redundancy connections)
PROFINET cable (line topology 1)
PROFINET cable (line topology 2)
IO device ET 200SP HA (with system redundancy R1)
IO device ET 200SP (with system redundancy R1)
S7-1500H configuration with R1 devices in a line topology
S7-1500R/H redundant system
System Manual, 01/2024, A5E41814787-AF