Siemens SIMATIC NET Manuel page 171

OSM
ORM
OSM
Fig. 6: Redundant ring structure
OSM
ORM
OSM
redundant
coupling
ITP XP line
OSM
ring 1 <–> ring 2
OSM
Ring 2
ORM
For coupling network segments the ports 1 or 2
are to use on these OSMs.
Abb. 7: Redundant coupling of redundant rings
OSM OSM
OSM OSM
OSM OSM
ring 1
OSM OSM
OSM
OSM OSM
OSM
OSM OSM
OSM OSM
OSM OSM
OSM OSM
redundant
coupling
ITP XP line
OSM
ring 1 <–> ring 3
OLM OLM OLM
Ring 3
OLM OLM
For coupling network segments the ports 1 and 2
are to use on these OSMs.
All other ports must stay free.
OSM
OSM
OSM
OSM
OSM
OLM OLM
OLM
5