Siemens ESM technical specifications Bus Structure, Bus with OSM

Network Topologies with OSM/ESM

3.1Bus 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 S7-300 S7-400

3

OSM

ITP 62

4

OSM

ITP 62

OSM TP 62

4

OSM ITP

4

OSM ITP 62

1 1 1 1

1Fiber-optic cable (FOC)

3TP cord 9/RJ-45

4ITP standard cable 9/15

Figure 10: Bus with OSM

Industrial Ethernet OSM/ESM	29
C79000-Z8976-C068-10