7
V1.3 | NRG PROFINET User Manual | © 2020 | CARLO GAVAZZI LTD.
EN
The NRG Controller supports the Media Redundancy Protocol (MRP). MRP is a standardised protocol according to
IEC2439. It describes a mechanism for media redundancy in ring topologies. Therefore, the NRG bus chain can also
be configured in a ring topology
3.3
Auto- addressing
The RG..Ns on the bus chain are automatically addressed upon the initial start-up of the system. The RG..Ns are
addressed based on their position on the bus chain.
Figure 5 SSRs in NRG bus chain are automatically addressed based on their position on the bus
Figure 3 NRG bus chains connected in a line PROFINET topology
Figure 4 NRG bus chain connected in a star PROFINET network
