Siemens ESM Operating Instructions Manual page 44

Network Topologies with OSM/ESM
Port 1
Port 1
Figure 19: Redundant Ring Coupling with OSM V2 as Standby Master/Standby Slave
Figure 16 also shows how an existing ring with Version 1 OSMs can be connected
to a ring with Version 2 OSMs.
40
Ring with OSM
version 1
Port 1
OSM
1
2 2
Standby
master
2
OSM
ITP 62
Port 1
1
1
1 Fiber-optic cable (FOC)
2 ITP XP standard cable 9/9
OSM
1 1
Standby
slave
OSM
ITP 62
1
Ring with OSM
version 2
Industrial Ethernet OSM/ESM
1
OSM
OSM in
RM mode
OSM
ITP 62
C79000-Z8976-C068-10