Synchronization Module For S7-400H; Function Of The Synchronization Module - Siemens SIMATIC S7-400H Manual

Synchronization Module
12.1

Synchronization Module for S7-400H

Function of the Synchronization Module

The synchronization module serves as the point-to-point communication of two
redundant S7-400H CPUs with two channels. You require two synchronization
modules per CPU for the fault-tolerance of 1 of 2 systems. You can connect the
modules in pairs via a fiber optic cable.
You can replace the synchronization module when voltage is applied. This supports
the repair behavior of H systems and thus tackles the failure of the redundant
connection without having to bring the plant to a halt.
Mechanical Configuration
Additional Front Cover
12-2
Rack No. 0–x–1
Switch for setting the rack
number
Automation System S7-400H Fault-tolerant Systems
A5E00068197-07