Siemens SIMATIC S7-1500 System Manual page 91

System overview
5.2 Configuration
The redundant design of the CPs (per R/H CPU) increases the availability of the redundant
system for the communication tasks:
• S7-1500R: max. 2 CPs per R-CPU
• S7-1500H: max. 6 CPs per H-CPU
On the rail you can mount the CPs via U-connector or via the active backplane bus:
• S7-1500R via U-connector: In the RUN-Redundant/RUN-Solo system state, reaction-free
removal and insertion of CPs is not possible.
• S7-1500H via active backplane bus: In the RUN-Redundant/RUN-Solo system state,
reaction-free removal and insertion of CPs is possible.
R-CPU configuration with CP 1543-1 on an Industrial Ethernet
①
②
③
④
⑤
Figure 5-17
90
Engineering station
CPU 1
CPU 2
CP 1543-1
PROFINET cable (redundancy connections, PROFINET ring)
S7-1500R configuration with CP 1543-1
S7-1500R/H redundant system
System Manual, 01/2024, A5E41814787-AF