Control Station Switching - Mitsubishi Electric MELSEC iQ-R Series User Manual

Control station switching

This function continues data link with another normal station that serve as a sub-control station even if the control station goes
down.
Switch
(1) (2)
Down
Network No.1
(6) (5)
No When the control station (station No.1) is down
(1) The control station (station No.1) is down.
(2) Sub-control station (station No.2)
(3) Normal station (station No.3)
(4) Normal station (station No.4)
(5) Normal station (station No.5)
(6) Normal station (station No.6)
Setting method
Set control station switching in "Control Station Shift Setting" under "Supplementary Cyclic Settings" in "Application Settings".
(Page 65 Supplementary Cyclic Settings)
• Data link temporarily stops when the control station is switched. While data link is stopped, data prior to the
stop is held.
• While data link is stopped, all stations become communication faulty stations other than the own station.
• The control station is not switched even if cyclic transmission at the control station is stopped by the
engineering tool.
• The control station is also switched to the normal station where cyclic transmission is stopped by the
engineering tool.
(3) (1)
(4) (6)
When the sub-control station (station No.2) is down
The control station (station No.1) is down.
The sub-control station (station No.2) is down.
Sub-control station (station No.3)
Normal station (station No.4)
Normal station (station No.5)
Normal station (station No.6)
Switch
(2) (3)
Down
Network No.1
(5) (4)
1
1 FUNCTIONS
41
1.3 RAS