PROFINET switch 4/8/16-port | Version 1 | 20.02.2020
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5.7
Media redundancy protocol (MRP)
The PROFINET switch supports the optional media redundancy protocol (MRP) as MRP client. MRP
stands for “media redundancy protocol”. MRP enables ring wiring, which also makes operation of the
PROFINET network possible in the event of the failure of a cable or of a participant.
There must be at least one MRP master (e.g. the CPU) in an MRP ring. All other participants of the ring
are then MRP clients.
In order to assign the PROFINET switch to an MRP ring, the “Client” media redundancy role must be
set for the “Media Redundancy” option under “General”.
If ring wiring is without the MRP roles being configured for all devices involved, this can result in
functional disruptions of the PROFINET network!
