Mitsubishi Electric MELSEC-Q Series User Manual page 151

*1 After saving the link devices, wait a fixed number of scans and execute the processing that sets the link devices saved at
master switching and Refresh instruction at standby master switching (SB0001).
For details, refer to Page 143, Section 8.2.5 (5).
(e) When the right of controlling data link is compulsorily transferred from the standby
master station to the master station
In the program example in Page 148, Section 8.2.5 (7) (d), change the sections in the dotted lines
and as follows.
2
• Program
1
Control
start relay
when the
master
station is
operating
Forced Forced
master master
switching switching
request executable
status
• Program
2
Control
start relay
when the
standby
master
station is
operating
Forced
master
switching
request
complete
Control program when the master station is operating
Control program when the standby master station is operating
(as a local station)
CHAPTER 8 FUNCTIONS
1
Forced
master
switching
Forced
master
switching
149
8