Siemens ESM Manual De Usuario

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

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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.

1 Fiber-optic 

cable 

(FOC)

3 TP 

cord 

9/RJ-45

4 

ITP standard cable 9/15

1

1

1

1

3

4

4

4

Figure 10: Bus with OSM