Mitsubishi Electric MELSEC iQ-F FX5 - Instruction related; Firmware update function; Latch area

APPX
Appendix 1 Special Relay List
689
A
Instruction related
The special relays related to instruction execution are shown below.
Firmware update function
The special relays for firmware update function are shown below.
Latch area
The special relays for latch area are shown below.
No. Name Description Compatible CPU module R/W
FX5S FX5UJ FX5U/
FX5UC
SM699 Dedicated instruction skip flag OFF: Intelligent dedicated instruction executed
ON: Intelligent dedicated instruction not
executed
R/W
SM700 Carry flag OFF: Carry off
ON: Carry on
R
SM701 Output character number switching OFF: NULL code output
ON: No change
R/W
SM703 Sort order OFF: Ascending order
ON: Descending order
R/W
SM704 Block comparison OFF: Non-match found
ON: All match
R
SM705 Number of conversion digits selection OFF: Set with a specific number of digits (sign +
numeric value of 5 digits)
ON: Set with any number of digits (maximum:
sign + numeric value of 5 digits)
R/W
SM709 DT/TM instruction improper data detection OFF: Improper data not detected
ON: Improper data detected
R/W
SM753 File being accessed OFF: Not in progress
ON: In progress
R
No. Name Description Compatible CPU module R/W
FX5S FX5UJ FX5U/
FX5UC
SM912 Firmware update prohibit state OFF: Firmware update enable state
ON: Firmware update prohibit state (Firmware
update prohibited file is present)
R
No. Name Description Compatible CPU module R/W
FX5S FX5UJ FX5U/
FX5UC
SM953 Data backup error check flag OFF: No error
ON: Error
R
SM959 Data restoration error check flag OFF: No error
ON: Error
R
SM9353 Clear/keep of latch label during PC write OFF: Clear
ON: Keep
R/W