Mitsubishi Electric MELSEC iQ-R Series User Manual page 40

Method for checking information related to the function
The status of the redundant power supply module can be checked with special relay (SM) and special register (SD).
■Special relay
SM number
SM150
SM151
SM152
SM153
SM154
For details on the special relay (SM), refer to the following.
Page 141 Redundant power supply system
■Special register
SD number
SD150
SD151
SD152
SD153
SD154
For details on the special register (SD), refer to the following.
Page 153 Redundant power supply system
1 FUNCTIONS
38
1.5 RAS Function
Name
Power-off/power supply voltage drop detection
Power supply module failure detection
Momentary power failure detection (power supply module 1)
Momentary power failure detection (power supply module 2)
Invalid power supply module
Name
Power-off/power supply voltage drop detection status
Power supply failure detection status
Momentary power failure detection count (power supply module 1)
Momentary power failure detection count (power supply module 2)
Details of the invalid power supply module