Hirschmann RS20 User Manual page 26

Ring Redundancy
If a section is down, the ring structure of a
 HIPER-(HIGH PERFORMANCE REDUNDANCY) Ring with up to 50
devices typically transforms back to a line structure within 80 ms (possible
settings: standard/accelerated).
 MRP (Media Redundancy Protocol) Ring (IEC 62439) of up to 50 devices
typically transforms back to a line structure within 80 ms (adjustable to
max. 200 ms/500 ms).
 Fast HIPER-Ring of up to 5 devices typically transforms back to a line
structure within 5 ms (maximum 10 ms). With a larger number of devices,
the reconfiguration time increases.
Devices with HIPER-Ring function capability:

Within a HIPER-Ring, you can use any combination of the following
devices:
– RS1
– RS2-./.
– RS2-16M
– RS2-4R
– RS20, RS30, RS40
– RSR20, RSR30
– OCTOPUS
– MICE
– MS20, MS30
– PowerMICE
– MACH 100
– MACH 1000
– MACH 1040
– MACH 3000
– MACH 4000
 Within an MRP-Ring, you can use devices that support the MRP protocol
based on IEC62439.
 Within a Fast HIPER-Ring, you can use any combination of the following
devices:
– RSR20/RSR30
– MACH 1000
– MACH 1040
Note: Only one Ring Redundancy method can be enabled on one device at
any one time. When changing to another Ring Redundancy method,
deactivate the function for the time being.
26
UM RedundConfig L2P
Release 8.0 05/2013