Download Siemens OSM Operating instructions

Network Topologies with OSM/ESM
3.1
Bus Structure
With OSMs or ESMs, bus structures can be implemented . The cascading depth
and total span of a network are limited only by the monitoring times of the
communication connections. These times must always be set higher than the
signal delay of the transmission path.
PC
S7-400
3
4
OSM
ITP 62
4
OSM
ITP 62
1
1
3
4
S7-300
4
OSM ITP 62
OSM ITP 53
OSM TP 62
1
S7-400
1
1
Fiber-optic cable (FOC)
TP cord 9/RJ-45
ITP standard cable 9/15
Figure 10: Bus with OSM
Industrial Ethernet OSM/ESM
C79000-Z8976-C068-10
29