Description
User manual 55170_hdb_en_13 18 / 145
3.4 Media redundancy
Media redundancy
(MRP)
The Media Redundancy Protocol (MRP) according to IEC 62439 describes
the PROFINET redundancy with a typical reconfiguration time of <200 ms for
the communication lines with TCP / IP and RT frames after an error. The fault-
free operation of an automation system implies a Media Redundancy Manag-
er (MRM) and several Media Redundancy Clients (MRC) arranged in a ring.
Fig. 3-5: Normal operation
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