PIPROFINET
1.9K views
What is PROFINET MRP?
What is a PROFINET MRP networking and how can be used to complement and help the existing application topology? Is this the only redundancy possibility available?
PIPROFINET
Answers
Top answer
In ring topologies, a media redundancy can be established so if a wire breaks in any section of the ring, the secondary connection to the network can be used.
PROFINET networks offer management solutions for ring topologies with defined media redundancy classes - Media Redundancy Protocol (MRP) and Media Redundancy for Planned Duplication (MRPD).
The MRP set up in a ring topology required all nodes in it to support MRP, and at least one of the nodes to support MRP manager capabilities. So if for any reason the transmission is interrupted, the ring manager can immediately activate the alternative communication within the millisecond range.
In order to set up an MRPD ring, all nodes have to support the MRPD, and one of them to support MRDP manager capabilities, same as in the MRP case. Within this topology, all of the nodes support PROFINET IRT (CC-C devices) as well.
In an MRPD ring, each of the message senders transmits two equal frames to the receiver in opposite directions around the ring, so in case of a failure - the frame still arrives at the receiver destination.
So, MRDP ensures constant, non-stop connectivity with a zero-time recovery.
You know a better answer?
The question about PI PROFINET has already been answered, but there may be a better solution or alternative available by now. If you know it, answer the question now and increase your reputation as an industry expert in our B2B community.
Related Questions
Data exchange between PC and Siemens via Profinet RT?
I have to program an application in C# that sends and receives data to and from an Siemens S7 PLC. For some reason they require...
Which components are in a Basic Profinet?
Hello All,
What component need to be in a basic CC-A Profinet?
E.g.: LLDP, DCP, RCP
In the PNO documentation of the Conformance Classes there is a conflict.
On...
What is the difference between PROFINET RT and IRT?
What are the differences and the purpose of these two PROFINET versions, the RT and IRT, and what they are used for?
Stay up to date on PI PROFINET
Was the content helpful to you?
