System overview
5.2 Configuration
S7-1500R/H redundant system
90 System Manual, 01/2024, A5E41814787-AF
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
PROFINET cable (redundancy connections, PROFINET ring)
Figure 5-17 S7-1500R configuration with CP 1543-1
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