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APPENDIX
Appendix 1 Special Relay List
Instruction related
The special relays related to instruction execution are shown below.
R: Read only, R/W: Read/Write
FX high-speed input and output
The special relays for FX high-speed input and output are shown below.
R: Read only, R/W: Read/Write
SM605 Memory card interchange protect OFF: Remove/insert enabled
ON: Remove/insert prohibited
R/W
SM606 Memory card disable request OFF: Clear command
ON: Command
R/W
SM607 Memory card disable status OFF: Not disabled by SD memory card forced stop request
ON: Disabled by SD memory card forced stop request
R
SM632 Data memory write error detection OFF: Write not executed/normal
ON: Write error
R
SM633 Data memory writing OFF: Write not executed
ON: Writing
R
SM634 Data memory write count error detection flag OFF: Overwrite count is less than 20,000
ON: Overwrite count is 20,000 or more
R
No. Name Description R/W
SM700 Carry flag OFF: Carry OFF
ON: Carry ON
R
SM701 Output characters selection 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
SM709 DT/TM instruction improper data detection OFF: Improper data not detected
ON: Improper data detected
R/W
No. Name Description R/W
SM4500 High-speed counter operation (CH1) OFF: Stopped
ON: Operation
R
SM4501 High-speed counter operation (CH2) OFF: Stopped
ON: Operation
R
SM4502 High-speed counter operation (CH3) OFF: Stopped
ON: Operation
R
SM4503 High-speed counter operation (CH4) OFF: Stopped
ON: Operation
R
SM4504 High-speed counter operation (CH5) OFF: Stopped
ON: Operation
R
SM4505 High-speed counter operation (CH6) OFF: Stopped
ON: Operation
R
SM4506 High-speed counter operation (CH7) OFF: Stopped
ON: Operation
R
SM4507 High-speed counter operation (CH8) OFF: Stopped
ON: Operation
R
SM4516 High-speed counter pulse density/Rotation speed
measurement (CH1)
OFF: Stopped
ON: Measurement
R
SM4517 High-speed counter pulse density/Rotation speed
measurement (CH2)
OFF: Stopped
ON: Measurement
R
SM4518 High-speed counter pulse density/Rotation speed
measurement (CH3)
OFF: Stopped
ON: Measurement
R
SM4519 High-speed counter pulse density/Rotation speed
measurement (CH4)
OFF: Stopped
ON: Measurement
R
SM4520 High-speed counter pulse density/Rotation speed
measurement (CH5)
OFF: Stopped
ON: Measurement
R
No. Name Description R/W