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14 DEDICATED INSTRUCTIONS
[Functions]
[Instruction symbol]
PFWRT
PLC program
PFWRT instruction
Complete device
Complete state display
device
[Errors]
(1) The PFWRT instruction completion can be confirmed using the complete devices
((D)+0) and ((D)+1).
(a) Complete device ((D)+0)
This device is turned ON by the END processing of the scan for which PFWRT
instruction is completed, and turned OFF by the next END processing.
(b) Complete state display device ((D)+1)
This device is turned ON and OFF according to the state in which PFWRT
instruction is completed.
• When completed normally
• When completed abnormally : This device is turned ON by the END
[Execution condition]
END
END
processing
processing
ON
OFF
OFF
OFF
(1) When a dedicated instruction is completed abnormally, the error complete signal
((D)+1) is turned ON, and the error code is stored in the complete status ((S)+1).
Check and take measures against the error referring to Section 15.2 List of error
codes.
: Kept unchanged at OFF.
processing of the scan for which PFWRT
instruction is completed, and turned OFF by
the next END processing. (same ON/OFF
operation as complete device).
ZP.PFWRT
PFWRT instruction
execution completion
14 - 12
MELSEC-Q
"Un"
(S)
(D)
END
END
processing
processing
ON
When
completed
ON
abnormally
When
completed normally
1 scan
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