Data Link Start By Standby Master Station - Mitsubishi Electric L26CPU-BT User Manual

8.2.8

Data link start by standby master station

This function allows data link to start by turning on either of the master or standby master station.
When the standby master station is turned on, even if no power is applied to the master station, data link will start.
To enable this function, the same parameters and programs must be set to the master and standby master stations.
When using the standby station as a backup for the master station, utilize the standby master function explained in
Section 4.3.6.
Controlling: Controlling the data link of the CC-Link system
Standby status: Standing by, waiting for a failure of the station controlling the data link of the CC-Link system
When only standby master station is started, data link is controlled by the standby master station.
Master station
Cyclic communication
The master station in the normal state returns to the system operation. → The master station is on standby in case of the standby
Master station
*2
Station number 0→1 , Occupies 1 station
Standby status
Cyclic communication
*1 When the master station goes down and the data link control is switched to the standby master station, the station
number of the standby master station becomes "0".
*2 When the master station returns as a standby master station, the station number of the master station becomes the one
specified in the "Standby Master Station No." in the network parameter setting.
156
Remote device station
Station number 2: Occupies 2 stations
Cyclic communication
Remote device station
Station number 2: Occupies 2 stations
Cyclic communication
Intelligent device station
Station number 4: Occupies 1 station
master station failure.
Intelligent device station
Station number 4: Occupies 1 station
To the next figure
Standby master station
Station number 1→0
Controlling
Cyclic communication
Standby master station
Station number 0
Controlling
Cyclic communication
*1