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Chapter 4. Basic instructions
4-27
4.8
No operation instruction
4.8.1
NOP
NOP
FUN (000) NOP
Available Device
Flag
Instructions
M
P
K
L
F
T
C
S
D
#
D Integer
Steps
Error
(F110)
Zero
(F111)
Carry
(F112)
NOP
1
No ladder symbol (Only available in mnemonic mode)
1) Functions
-
This is a no operation instruction and has no effect on the previous operation result.
-
The NOP instruction is used in the following cases ;
a) To provide space for debugging of sequence programs.
b) To delete an instruction without changing the number of steps.
c) To delete an instruction temporarily.
2) Program example
00000
[Mnemonic program]
0000 LOAD P020
0001 AND P021
0002 NOP
0003 OUT P060
0004 LOAD P022
0005 OUT P061
0006 END
(
P060
)
P020
P022
[
END
]
00004
00006
(
P061
)
P021
NOP is omitted
[Ladder program]