Mitsubishi Electric MELSEC Q Series User Manual page 442

8 DEDICATED INSTRUCTION
[Operation at execution of LOGDEL instruction]
Error
Program example
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When the LOGDEL instruction is completed, the completion device (bit device) set in
((D) + 0) turns on in the END processing of the completed scan, and turns off in the
next END processing.
When an error occurs, the completion device set in ((D) + 1) turns on and the error
code is stored into the completion status (word device) set in ((S) + 1).
Sequence program
LOGDEL instruction
Completion device
Completion device +1
When the dedicated instruction is abnormally completed, the abnormal completion
signal ((D) + 1) turns on and an error code is stored into the completion status
((S) + 1).
Check the error status according to the error code and take corrective action.
Refer to Section 9.3 for the error code.
Program with which the Web server module mounted in the position of I/O numbers
X/Y00 to X/Y1F deletes the saved file of the logging data when M24 is turned on.
END
Scan Scan
processing
Instruction execution
OFF
OFF
File deletion
Normal processing
Abnormal processing
MELSEC-Q
END END
Scan
processing processing
ON
ON
When abnormally completed
Deletes one saved file
of logging data
Logging No. 1
Saved file No.
(Deletes the oldest file)
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