Inverse - Mitsubishi FX1S Series Programming Manual

FX Series Programmable Controllers
2.18

Inverse

Mnemonic
INV
(Inverse)
Program example:
X0
M0
X1
M1
Basic points to remember:
- The INV instruction is used to change (invert) the logical state of the current ladder
network at the inserted position.
- Usage is the same as for AND and ANI; see earlier.
Usages for INV
• Use the invert instruction to quickly change the logic of a complex circuit.
It is also useful as an inverse operation for the pulse contact instructions LDP, LDF,
ANP, etc.
Function
Invert the current
result of the
internal PLC
operations
PLS
SET
PLF
RST
Format
M0
Y0
M1
Y0
Basic Program Instructions 2
FX FX FX
1S 1N 2N
Devices Program steps
N/A
0 LD X
1 PLS M
LD M
3
4 SET Y
5 LD X
PLF M
6
8 M
LD
9 RST Y
2-21
FX
2NC
1
0
0
0
0
1
1
1
0