Cascading (Series Connection) Of Several Ddls 200 Data Paths - Leuze electronic DDLS 200 Series Original Operating Instructions

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4.3

Cascading (series connection) of several DDLS 200 data paths

If there are multiple optical data transmission paths between two communicating participants (TN),
one speaks of 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
directly with participant 7 (TN7), then five optical transmission paths are cascaded.
This constellation can also occur if, e.g., a programming device that attempts to access
participant 3 (TN3) is connected to participant 7 (TN7) for maintenance purposes or during
commissioning 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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