Mitsubishi Electric MELSEC-Q Series - Page 135

133
CHAPTER 4 FUNCTIONS
4
4.4 RAS Functions 4.4.6 Detection of duplicated control station or station No.
(b) When duplication of station No. is detected
Function Operation
Cyclic transmission
Stations of duplicated station No. do not perform cyclic transmission.
Other stations, each of which has unique station No, perform cyclic transmission.
Transient transmission Not allowed for stations of duplicated station No.
Control station
No. 1
Normal station
No. 2
Normal station
No. 4
Normal station
No. 3
Cyclic transmission among
stations No.1 to No.4
Station No. duplication occurs at station No.4.
Another network that includes an existing station No. was added by mistake.
Control station
No. 6
Sub-
control station
No. 5
Normal station
No. 4
Cyclic transmission between
stations No.4 and No.5
Down
Station No. 1 to 3 and 5 continue cyclic transmission.
Normal station
No. 5
Normal station
No. 4
Control station
No. 1
Normal station
No. 2
Normal station
No. 4
Normal station
No. 3
Station No.
duplication
Station No.
duplication
Control station
No. 6
Down
Upon reconnection to the network, control station duplication is detected at station No.6.
Page 130, Section 4.4.6 (2)