Mitsubishi Electric MELSEC Q Series Reference Manual page 132

(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
Function
Cyclic transmission
Transient transmission
130
Another control station was added by mistake.
Control station
No. 5
Control station duplication occurs at station No.5.
Stations No. 1 to 4 continue cyclic transmission.
Control station
No. 5
Control station
duplication
The control station added to the network does not perform cyclic transmission.
Available for all stations.
Normal station
Control station
No. 2
No. 1
Cyclic transmission among stations
No.1 to No.4
Normal station
Normal station
No. 3
No. 4
Control station Normal station
No. 1 No. 2
Normal station Normal station
No. 4 No. 3
Operation