Mitsubishi Electric QJ71C24N User Manual page 291

10 DEDICATED INSTRUCTIONS
Error
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(3) Whether an OUTPUT instruction was completed normally or abnormally can be
checked by the completion device ((D)) or status display device at completion
((D)+1).
(a) Completion device: Turns on at the END processing of the scan where the
(b) Status display device
at completion
[Operation during execution of an OUTPUT instruction]
Sequence
program
OUTPUT instruction
Completion device
Status display device
at completion
(1) When a dedicated instruction is completed abnormally, the abnormal completion
signal, (D)+1, turns on and the error code is stored in the transmission result
(S1)+1.
In case of operation errors, the error flag (SM0) turns on and the error code is
stored in the SD0.
See one of the following manuals according to the error code, and check and
correct the error.
<Error code>
4FFF or less : QCPU User's Manual
H
(Hardware Design, Maintenance and Inspection)
7000 or more: Section 11.2
H
OUTPUT instruction is completed, and turns off at the
next END processing.
: Turns on and off depending on the completion status
of the OUTPUT instruction.
• Normal completion
• Abnormal completion: Turns on at the END
END END
processing
processing
Execution of OUTPUT
instruction
OFF
OFF
MELSEC-Q
: Off with no change.
processing of the scan
where the OUTPUT
instruction is completed, and
turns off at the next END
processing.
END END
processing processing
Completion of transmission by
the OUTPUT instruction
ON
Abnormal
ON
completion
Normal
completion
One scan
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