
Network Topologies with OSM/ESM
Industrial Ethernet OSM/ESM
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C79000-Z8976-C068-04
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.
OSM
ITP 62
OSM
ITP 62
OSM TP 62
OSM ITP 62
1 Fiber-optic cable (FO)
3 TP cord 9/RJ45
4 ITP standard cable 9/15
PC
S7-400 S7-300 S7-400
Figure 7: Bus with OSM
Apart from OSM ITP62-LD modules, all listed OSM variants can be used in any
combination in a bus consisting of OSMs. OSM ITP62-LD modules can only be
coupled with other OSM ITP62-LD modules via the optical ports (monomode fiber).
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