Mitsubishi Electric M800VW Series Programming Manual page 151

M800V/M80V Series PLC Programming Manual (1/2)
7 Basic Instructions
7.2 Connection Instructions
INV: Operation results inversion
Setting
Bit device
data
X Y M L F
[Instruction symbol] [Execution condition]
INV
 Functions
 Inverts the operation result immediately prior to the INV instruction.
Operation result immediately prior to the INV instruction
OFF
ON
 Arithmetic errors
 There are no arithmetic errors associated with the INV instruction.
 Program example
 A program which inverts the X0 ON/OFF data, and outputs from Y10.
X0
0
3
[Timing chart]
ON
OFF
X0
Y10 ON
OFF
POINT
(1) The INV instruction operates based on the results of calculation made until the INV instruction is given. Accord-
ingly, use it in the same position as that of the AND instruction.
The INV instruction cannot be used at the LD and OR positions.
IB-1501667-B
Usable devices
B SB T SM V T C
[Ladder mode]
END
Word device
D R/ZR W SW SD Z
Operation result following the execution of the INV instruction
ON
OFF
Y10
Steps
0
1
2
3
130
Digit
Con-
Pointer designa- Index
stant
tion
K H P
[List mode]
Inst. Device
LD X0
INV
OUT Y10
END