Mitsubishi Electric MELSEC iQ-R Series User Manual page 412

Operation of the special relay and special register
The following chart shows the operation of the special relay and special register.
SM1653 Memory copy start
SM1654 Memory copy being executed
SM1655 Memory copy completion
SD1653 Memory copy destination I/O number
SD1654 Memory copy status
(1) The memory copy starts.
(2) The memory copy is completed.
(3) When the memory copy is successfully completed, 0 is stored. When it is completed with an error, an error code is stored.
26 REDUNDANT FUNCTION
410
26.4 Memory Copy from Control System to Standby System
(1)
ON
OFF
ON
OFF
ON
OFF
0
0
(2)
03D1H
0
(3)
0