Mitsubishi MELSEC QCPU User Manual

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MELSEC-Q/QnA
5 SEQUENCE INSTRUCTIONS
PAGE n
(1) This is a no operation instruction that has no impact on any operations up to that point.
(2) Causes processing from step 0 of the designated nth page of the program following the PAGE
n instruction. (Peripheral device display, printers, etc.)
(3) If there is no PAGE n instruction, processing begins from page 0.
[Operation Errors]
(1) There are no errors associated with the NOP, NOPLF, or PAGE instructions.
[Program Example]
NOP
(1) Contact closed .............. Deletes AND or ANI instruction
END4
0
X8
Y12
Y97
Y96
Changed to NOP
LD
AND
ANI
OUT
END
Steps Instruction
Device
0
1
2
3
4
X8
Y97
Y96
Y12
0
X8
Y12
END
4
Y96
LD
NOP
ANI
OUT
END
Steps Instruction
Device
0
1
2
3
4
X8
Y96
Y12
Before change
[Ladder Mode]
[List Mode]
After change
[Ladder Mode]
[List Mode]
(2) Contact closed ..............LD, LDI changed to NOP (Note carefully that changing the LD and LDI
instructions to NOP completely changes the nature of the ladder.)
Before change
[Ladder Mode]
[List Mode]
After change
[Ladder Mode]
[List Mode]
END5
0
X0
Y16
2
X56
Y66
T3
Changed to NOP
LD
OUT
LD
AND
OUT
END
Steps Instruction
Device
0
1
2
3
4
5
X0
Y16
X56
T3
Y66
0
X0
Y16
END
5
Y66
T3
LD
OUT
NOT
AND
OUT
END
Steps
Instruction
Device
0
1
2
3
4
5
X0
Y16
T3
Y66
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Mitsubishi MELSEC QCPU Specifications

General

Brand	Mitsubishi
Model	MELSEC QCPU
Category	Controller
Language	English