Mitsubishi Electric MELSEC iQ-R Series User Manual page 666

No. Name
SM1618 Online module change
error flag
SM1619 Disable request flag
during online module
change
APPX
664
Appendix 4 List of Special Relay Areas
Data stored
Off: No error
On: Error
Off: No disable request
On: Disable request detected
Details
This relay turns on when an error is detected. This relay
turns off when the error cause is eliminated and the online
module change related request is executed.
An error occurs in selecting a module. Thus, turn off the
relay before module selection.
This relay turns on when a disable request is issued during
the online module change processing. The relay turns off
upon completion of the online module change processing.
Set by (setting
timing)
S (Status change)/
U (Request)
S (Status change)