Download Siemens SIMATIC NET Operating instructions

Redundant
line
redundant mode
Port 5 in the
200 m
6
OLM
300 m
4. 727-1 drop cable
5. Triaxial cable
6. Fiber-optic cable (FO)
5
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1. ITP standard cable 9/15
2. TP cord 9/RJ45
3. ITP XP standard cable 9/9
4
3
OLM
1
Node 4
OLM
400 m
1
OLM
1
100 m
Node 1
Figure 3-7
4
ELM
ELM
6
3
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250 m
OLM
OLM
Node 5
2
3
80 m
3
3
6
100 m
7
50 m
OLM
4
OLM
100 m
1
Node 3
4
300 m
5
OLM
5
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ASGE
OSM ITP62
6
OSM ITP62
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OSM ITP62
Node 2
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2
Configuring Networks
Combination of OLMs and Star Couplers
If redundant OLM rings are connected to a star coupler as shown in the example,
this ring must be segmented to a worst-case bus. In the example configuration,
this means that the line between the star coupler and OLM 4 is interrupted (the
lightning strike shown in Figure 3-7). If node 3 on OLM 4 wants to exchange data
with node 1 on OLM 1, the route from OLM 4 via OLM 5, 6 and 7 to the star
coupler must be calculated.
SIMATIC NET Twisted-Pair and Fiber-Optic Networks
C79000-G8976-C125-02
3-21