Cascading (Series Connection) Of Several Ddls 200 Data Paths - Leuze electronic DDLS 200 Technical Description

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4.3

Cascading (series connection) of several DDLS 200 data paths

If two communicating participants (TN) are separated by several optical transmission paths between
two participants, then this is called cascading. There are further participants between the individual
optical transmission paths in this case.
Master
TN1
DDLS 200
Path 1
DDLS 200
Path 3
DDLS 200
TN8
Figure 4.3: Cascading of several DDLS 200 systems
Attention!
If, for example, participant 3 (TN3) of a multi-master bus system wants to exchange data di-
rectly with participant 7 (TN7), then 5 optical transmission paths are cascaded.
This constellation can also occur if, e.g., a programming device that attempts to access par-
ticipant 3 (TN3) is connected to participant 7 (TN7) for maintenance purposes or during com-
missioning of a master-slave-system.
14
TN2
TN4
TN5
Path 4
DDLS 200
TN3
Path 2
DDLS 200
TN6
Path 5
DDLS 200
DDLS 200
TN7
Path 6
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