4
- 50
4.3 RAS Functions
4.3.6 Detection of duplicated control station or station No.
4
FUNCTIONS
(2) When adding a station to the network
A station will be added to a network in the following cases:
• A station in the network is disconnected due to an error, and after correction of
the error, power is reapplied.
• Power is applied to stations in order to start up the system and a station is added
to the network.
(a) When duplication of the control station is detected
Figure 4.56 When duplication of the control station is detected
Table 4.17 When duplication of the control station is detected
Function
Operation
Cyclic transmission
The control station added to the network does not perform cyclic transmission.
Transient transmission
Available for all stations.
Control station
No. 1
Normal station
No. 2
Normal station
No. 4
Normal station
No. 3
Control station
No. 5
Cyclic transmission among stations
No.1 to No.4
Control station duplication occurs at station No.5.
Another control station was added by mistake.
Control station
No. 1
Normal station
No. 4
Control station
No. 5
Normal station
No. 2
Normal station
No. 3
Control station
duplication
Stations No. 1 to 4 continue cyclic transmission.
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