Siemens Simatic PCS 7 Function Manual page 33

High availability process control systems
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Total failure of a redundancy node
The following figure shows a complete system that has ceased to operate due to a failure of
the "Field bus" redundancy node.
High Availability Process Control Systems (V9.0)
Function Manual, 05/2017, A5E39221836-AA
Basics of high availability
3.10 Redundancy nodes
33

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