Mitsubishi Electric M800VW Series Programming Manual page 177

M800V/M80V Series PLC Programming Manual (1/2)
7 Basic Instructions
7.6 Other Instructions
PAGE n
 Since this is the instruction that does not involve processing, it has no effect on the operations up to that point.
 Programs after PAGEn instruction are controlled as 0 step and after of the specified n-th page.
(Peripheral device display, printers, etc.)
 If there is no PAGEn instruction, processing begins from page 0.
 Arithmetic errors
 There are no errors associated with the NOP, NOPLF, or PAGE instructions.
 Program example
[NOP]
 Contact closed: Deletes AND or ANI instruction
Before change
0
After change
0
 Contact closed: LD, LDI changed to NOP
(Note carefully that changing the LD and LDI instructions to NOP completely changes the nature of ladder.)
Before change
0
2
After change
0
IB-1501667-B
[Ladder mode]
X8 Y97 Y96
Changed to NOP
X8 Y96
[Ladder mode]
X0
Y16
T3
X56
Changed to NOP
X0
T3
Y66
Steps
0
1
Y12
2
3
4
Steps
0
1
Y12
2
3
4
Steps
0
1
2
3
Y66
4
5
Steps
0
1
2
Y16
3
4
5
156
[List mode]
Inst. Device
LD X8
AND Y97
ANI X96
OUT Y12
END
Inst. Device
LD X8
NOP
ANI X96
OUT Y12
END
[List mode]
Inst. Device
LD X0
OUT Y16
LD X56
AND T3
OUT Y66
END
Inst. Device
LD X0
OUT Y16
NOP
AND T3
OUT Y66
END