Siemens S71500R/H redundant system Presentation by Amol Arvind Shirsat.
Architecture in Siemens S71500RH systems
Configuration in Siemens S71500RH systems
S71500 Redundancy & High Availability

1) S71500R uses the PROFINET ring (via the PROFINET interfaces X1) for the synchronization of the two CPUs.
2) S71500H uses the redundancy connections over fiberoptic cables to synchronize the two CPUs

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