Media Redundancy Protocol - Siemens Simatic PCS 7 Function Manual

4.3.2

Media Redundancy Protocol

Use of media redundancy protocol
Note
High Speed Redundancy Protocol (HRP) and Media Redundancy Protocol (MRP)
The X200 IRT switches cannot serve as redundancy manager and standby manager at the
same time.
The standby manager can only be operated with the High Speed Redundancy Protocol.
Standby redundancy and media redundancy protocol do not work together.
Separate terminal and plant bus
Common terminal and plant bus
PROFINET fieldbus
Note
PROFINET fieldbus
If you configure a fieldbus ring with PROFINET, you must use the Media Redundancy Protocol
(MRP). The High Speed Redundancy Protocol (HRP) and MRP cannot be used simultaneously
in a ring. The PROFINET fieldbus ring may only consist of devices that support MRP
functionality.
High Speed Redundancy Protocol (HRP)
HRP is used for redundant coupling in a terminal and plant bus ring.
Ring redundancy and redundant connection of rings are possible by means of configuration
of the following functions:
● Redundancy manager
● Standby manager
High Speed Redundancy (HSR - obsolete)
Obsolete term: This term can be found in older firmware versions of Industrial Ethernet
switches. The functionality corresponds to that of HRP. You can find additional information
about High Speed Redundancy and High Speed Redundancy Protocol in the documentation
of the Industrial Ethernet switches.
High Availability Process Control Systems (V9.0)
Function Manual, 05/2017, A5E39221836-AA
High availability solutions in PCS 7
4.3 Solutions for communication
HRP
X
X
-
MRP
-
-
X
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