Hirschmann RS20 Programming Manual page 79

Ring/Network coupling
Figure 40: Selecting the redundancy mode
With the "Redundant Ring/Network Coupling" setting, either the main
line or the redundant line is active. Both lines are never active simulta-
neously.
With the "Extended Redundancy" setting, the main line and the redun-
dant line are simultaneously active if the connection line between the
devices in the connected network fails
During the reconfiguration period, there may be package duplications.
Therefore, only select this setting if your application detects package
duplications.
Figure 41: Extended redundancy
Coupling mode
The coupling mode indicates the type of the connected network.
In the "Coupling Mode" frame, select
– "Ring Coupling" or
– "Network Coupling"
Redundanz L2P
Release 5.0 04/09
5.2 Preparing a Ring/Network coupling
(see fig. 27).
(see fig. 42)
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