Configuration of the network connections
A ring structure from SCALANCE X switches is recommended as the structure for the plant
bus or terminal bus; this is also available in a redundant design as an option. For the ring
structure a switch is set up as the redundancy manager (RM) in redundancy mode (HRP
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Compendium Part A - Configuration Guidelines (V8.2)
Configuration Manual, 08/2016, A5E38166869-AA