Siemens SCALANCE XM-400 Configuration Manual page 51

Set the following parameters for the MRP configuration of the device:
● Domain
● Role
● Ring port
● Diagnostic interrupts
These settings are described below.
Note
Valid MRP configuration
In the MRP configuration in STEP 7, make sure that all devices in the ring have a valid MRP
configuration before you close the ring. Otherwise, there may be circulating frames that will
cause a failure in the network.
One device in the ring needs to be configured as "redundancy manager" and all other devices
in the ring as "clients".
Note
Note factory settings
MRP is disabled and spanning tree enabled for the following brand new IE switches and those
set to the factory settings:
● SCALANCE XB-200 (Ethernet/IP variants)
● SCALANCE XP-200 (Ethernet/IP variants)
● SCALANCE XR-300WG
● SCALANCE XM-400
● SCALANCE XR-500
To load a PROFINET configuration into one of the specified devices, first disable spanning
tree on the device.
Note
Reconfiguration only when the ring is open
First open the ring before you
● change the MRP role or
● reconfigure ring ports
Note
Starting up and restarting
The MRP settings are still effective after a restart of the device or a power failure and hot restart
as long as the power failure does not occur within 90 seconds after the configuration change.
SCALANCE XM-400/XR-500 Web Based Management (WBM)
Configuration Manual, 05/2017, C79000-G8976-C248-12
Technical basics
4.6 Redundancy mechanism
51