Siemens SIMATIC PCS 7 Configuration Manual page 137

Manager). The remaining switches must support the ring redundancy as nodes and be
configured as the HRP client in redundancy mode.
Note
Connecting redundant stations to the bus via 2 different switches is recommended in order to
guarantee the availability of the plant (affects H systems as well as a redundant OS server
pair).
The required and optional settings for SCALANCE X switches are described in the
corresponding manual.
The Media Redundancy Protocol (MRP) which can also be set is not permitted at the plant
bus or at the terminal bus in PCS 7.
NetPro view
In the NetPro view the following network structure for the project "01_Plant_A" with the H
system is presented as the result of the existing configuration.
The station's orange color denotes pending changes that have not yet been compiled. Once
the configuration described in this section has been completed in NetPro, all stations in the
multiproject must be represented by an error-free compilation in white before the configuration
is loaded into the automation systems.
With a station-selective configuration, as in this example, the networks (subnets) of the
individual subprojects must also be merged.
Compendium Part A - Configuration Guidelines (V8.2)
Configuration Manual, 08/2016, A5E38166869-AA
Configuration of the network connections
137