Siemens SIMATIC S7-1500 System Manual page 106

Example
The following figure shows the redundant coupling based on the example of S7-1500R in 2
rings:
①
②
③
④
⑤
⑥
Figure 5-21
S7-1500R/H redundant system
System Manual, 01/2024, A5E41814787-AF
Primary MIC
Media Redundancy Interconnection Manager (MIM)
Secondary Link
Secondary Coupled MIC
Primary Coupled MIC
Primary Link
Example: Redundant connection of S7-1500R in 2 rings with MRP interconnection
System overview
5.3 S7-1500 R/H-CPUs
105