Mitsubishi Electric MELSEC iQ-RJ71EN71 User Manual page 80

Precautions when the control is switched
■During a parameter error
While a parameter error is occurring in the master station or submaster station, the submaster station does not change to the
master operating station even if the master station is disconnected. (Data link cannot be performed because all the stations
become faulty.)
■During a CPU module stop error in the master station
While a CPU module stop error is occurring in the master station, the submaster station does not operate as a master
operating station even if the submaster station is connected. (Data link is not started.)
■If a submaster station starts to operate as a master operating station while cyclic
transmission is stopped
If a submaster station starts to operate as a master operating station after cyclic transmission is stopped in the master station
(during master operation), data link with the master station cannot be restarted in the submaster station. Restart data link in
the master station.
■Transfer of the items set in the submaster station operating as a master operating station
The following items set in the submaster station operating as a master station are not transferred to the returned master
station.
• Data link start/stop
• Temporary error invalid station setting/canceling
• Temporary cancel/enabling of the reserved station
1 FUNCTIONS
78
1.6 Submaster Function