Media Redundancy for PROFINET IO
Max Felser · 2008
The use of Ethernet based solutions in automation applications opens new possibilities for the integration of new functionalities. But one of the critical point is the availability of the communication system. This paper gives an overview of the Media Redundancy Protocol (MRP) as defined in IEC 62439 and some adaptations needed to support the Profinet IO Real-Time (RT) protocol.