Mitsubishi Electric MELSEC iQ-R Series User Manual page 45

The master station in the normal state returns to the system operation.
Master station
*2
(station No.: 0→1 , number of
occupied stations: 1)
Standby status
Cyclic transmission
An error has occurred in the standby master station. → Data link is controlled by the master station.
Master station
(station No.: 1→0)
Controlling
Cyclic transmission
The standby master station in the normal state returns to the system operation.
Master station
Controlling
Cyclic transmission
*2 When the master station returns, it operates with the station number of the standby master station, but the dot matrix LED indicates the
station number set in the module ("0" for the master station). The MST LED turns off and the S MST LED turns on.
Continued from the previous figure
→
The master station is on standby in case of the standby
master station failure.
Remote device station
(station No.: 2, number of
occupied stations: 2)
Cyclic transmission
Remote device station
(station No.: 2, number of
occupied stations: 2)
Cyclic transmission
Remote device station
(station No.: 2, number of
occupied stations: 2)
Cyclic transmission
Intelligent device station
(station No.: 4, number of
occupied stations: 1)
Cyclic transmission
Intelligent device station
(station No.: 4, number of
occupied stations: 1)
Cyclic transmission
→
The standby master station is on standby in case of
the master station failure.
Intelligent device station
(station No.: 4, number of
occupied stations: 1)
Cyclic transmission
Standby master station
(station No.: 0)
Controlling
Standby master station
Standby master station
(station No.: 1, number of
occupied stations: 1)
Standby status
1 FUNCTIONS
1.3 Standby Master Function
1
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