Technical basics
4.4 Redundancy mechanism
SCALANCE XB-200 Web Based Management
Configuration Manual, 04/2015, C79000-G8976-C360-02
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Configuration in WBM
Role
The choice of role depends on the following use cases:
● You want to use MRP in a ring topology only with Siemens devices:
– For at least one device in the ring select "Automatic Redundancy Detection" or "MRP
Auto Manager".
– For all other devices in the ring select "MRP Client" or "Automatic Redundancy
Detection".
● You want to use MRP in a ring topology that also includes non-Siemens devices:
– For exactly one device in the ring select the role "MRP Auto Manager".
– For all other devices in the ring topology, select the role of "MRP Client".
Automatic Redundancy Detection" is not possible when using non-Siemens
● You configure the devices in an MRP ring topology partly with WBM and partly with STEP
7:
– With the devices you configure using WBM, select "MRP Client" for all devices.
– With the devices that you configure using STEP 7, select precisely one device as
"Manager" or "Manager (Auto)" and "MRP Client" for all other devices.
Note
If a device is assigned the role of "Manager" with STEP 7, all other devices in the ring
must be ass
igned the "MRP Client" role. If there is a device with the "Manager" role and a
device with the "Manager (Auto)"/"MRP Auto
-Manager" in a ring, this can lead to
circulating frames and therefore to failure of the network.
In WBM, you configure MRP on the following pages:
● Configuration (Page 126)
● Ring redundancy (Page 141)