
Configuring Networks
3-26
SIMATIC NET Twisted-Pair and Fiber-Optic Networks
C79000-G8976-C125-02
Note
The reconfiguration time of less than 0.3 s can only be achieved when no
components (for example switches from other vendors) other than ESMs are used
in the redundant ring.
In a ring, one device and one device only must operate in the redundancy
manager mode.
DTEs or complete network segments can be attached to ports 1 – 6 of an ESM
operating in the RM mode.
2
2
2
2 Structured cabling with SIMATIC NET twisted pair
2
2
2
ESM in
RM mode
2
2
2
ESM TP80
ESM TP80 ESM TP80
ESM TP80
ESM TP80
ESM TP80 ESM TP80 ESM TP80
ESM TP80
Figure 3-9 Redundant Ring Structure with ESMs
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