Inverting The Operation Result - Mitsubishi Electric MELSEC iQ-R Series Programming Manual

Inverting the operation result

INV
RnPCPU RnPCPU
RnCPU RnENCPU
(Process) (Redundant)
This instruction inverts the operation result up to just before the INV instruction.
Ladder
FBD/LD
EN ENO
■Execution condition
Instruction
INV
Processing details
• This instruction inverts the operation result up to just before the INV instruction.
Operation result up to just before the INV instruction
Off
On
Operation error
There is no operation error.
• The INV instruction operates based on the result of operations performed up to just before the INV
instruction. Use it at the same position as the AND instruction. The instruction cannot be used at the LD or
OR instruction position.
• When a ladder block is used, the operation result is inverted within the range of the ladder block. When the
INV instruction and the ANB instruction are used together in the same ladder, pay attention to the inversion
range.
M0 M1
M10
ANB
Broken line part: Inversion range
For details on the ANB instruction, refer to the following.
Page 168 ANB, ORB
RnSFCPU RnSFCPU
(Standard) (Safety)
Execution condition
Every scan
M2
M20
ST
ENO:=INV(EN);
Operation result after execution of the INV instruction
On
Off
Y10
5 SEQUENCE INSTRUCTIONS
5.2 Association Instructions
5
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