Other Instructions - Mitsubishi Electric M800VW Series Programming Manual

M800V/M80V Series PLC Programming Manual (1/2)
7 Basic Instructions

7.6 Other Instructions

7.6 Other Instructions
NOP, NOPLF, PAGE n: No operation
Setting
Bit device
data
X Y M L F
n
[Instruction symbol] [Execution condition]
NOP
NOPLF
PAGE n
 Functions
NOP
 Since this is the instruction that does not involve processing, it has no effect on the operations up to that point.
 The NOP instruction is used in the following cases:
- To insert space for sequence program debugging.
- To delete an instruction without having to change the number of steps. (Replace the instruction with NOP)
- To temporarily delete an instruction.
NOPLF
 Since this is the instruction that does not involve processing, it has no effect on the operations up to that point.
 The NOPLF instruction is used when printing from a peripheral device to force a page change at any desired location.
(a) When printing ladders
- A page break will be inserted between ladder blocks with the presence of the NOPLF instruction.
- The ladder cannot be displayed correctly if an NOPLF instruction is inserted in the midst of a ladder block.
Do not insert an NOPLF instruction in the midst of a ladder block.
(b) When printing instruction lists
- The page will be changed after the printing of the NOPLF instruction.
 See the Operating Manual for the peripheral device in use for more information regarding printouts from peripheral devices.
Usable devices
B SB T SM V T C
Con-
Word device
stant
D R/ZR W SW SD Z K
○
*NOP is not displayed in ladder display.
NOP
155
Digit
Pointer designa- Index
tion
H P
NOPLF
PAGE n
IB-1501667-B