Structure Of The S7-1500H Redundant System - Siemens SIMATIC S7-1500 System Manual

System overview
4.2 Configuration
interfaces X1 P2R of the CPUs directly connects the two CPUs. Via the PROFINET interfaces X1
P1R of the CPUs you set up the PROFINET ring from the first CPU via the IO devices to the
second CPU.
Configuration example
① Optional load current supply
② CPU
③ Mounting rail with integrated DIN rail profile
④ PROFINET cable (redundancy connections, PROFINET ring)
Figure 4-14 S7‑1500R configuration example
4.2.2

Structure of the S7-1500H redundant system

Configuration
The S7‑1500H redundant system comprises the following components:
• Two H-CPUs
• Two SIMATIC memory cards
• Four synchronization modules (two synchronization modules in each H-CPU)
• Two redundancy connections (two duplex fiber-optic cables)
• If applicable, IO devices
• Load current supply (optional)
The S7‑1500H redundant system should be installed either on one shared mounting rail or on
two separate mounting rails. You connect the two CPUs with fiber-optic cables to two
synchronization modules in each CPU. You set up the PROFINET network via the PROFINET
interfaces X1 P1R and X1 P2R of the CPUs.
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S7-1500R/H redundant system
System Manual, 11/2022, A5E41814787-AD