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This document describes the PROFINET implementation of the Automanager function.
The /IEC62439-2/ standard for the Media Redundancy Protocol (MRP), chapter 5.7, describes a possibility to have more than one device with Media Redundancy Manager (MRM) capability in one ring. An enhanced protocol, suggested but not defined in /IEC62439-2/, should be used then to decide about one remaining manager in the ring, while the other devices transition to the Media Redundancy Client (MRC) role.
This functionality is further on in this document addressed as the “Automanager” function or “MRA”.
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