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You mount the CPUs on a common mounting rail or spatially separated 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 ring with the PROFINET interfaces X1 P1 R and
X1 P2 R of the CPUs.
①
Optional load current supply
②
First CPU
③
Mounting rail with integrated DIN rail profile
④
Second CPU
⑤
Location of the synchronization modules (not visible in graphic)
⑥
Redundancy connections (fiber-optic cables)
⑦
PROFINET cable (PROFINET ring)
Figure 2-1
Configuration example for S7-1500H
Note
Standard rail adapter
You mount the CPUs on a standardized 35 mm rail using the standard rail adapter.
You can find information on mounting the standard rail adapter in the S7-1500R/H redundant
system (https://support.industry.siemens.com/cs/ww/en/view/109754833) System Manual.
CPU 1518HF-4 PN (6ES7518-4JP00-0AB0)
Equipment Manual, 05/2021, A5E49868646-AA
2.1 Configuration and operating principle
Product overview
9
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