Boolean Not (Bnot); Structured Text; Function Block; Fbd_Boolean_Not Structure - Allen-Bradley Logix5000 Reference Manual

Chapter 7 Move/Logical Instructions (MOV, MVM, BTD, MVMT, BTDT, CLR, SWPB, AND, OR, XOR, NOT, BAND, BOR, BXOR, BNOT)

Boolean NOT (BNOT)

IF NOT operand THEN
<statement>;
Input Parameter Data Type
EnableIn BOOL
In BOOL
Output Parameter Data Type
EnableOut BOOL
Out BOOL
340
The BNOT instruction complements a boolean input.
To perform a bitwise NOT, see
Operands:

Structured Text

Use NOT as an operator within an expression. The operand must be a BOOL values or
expressions that evaluate to BOOL values. This expression evaluates whether operand is
cleared (false).
See Structured Text Programming
structured text.

Function Block

Operand
BNOT tag

FBD_BOOLEAN_NOT Structure

Description
Enable input. If cleared, the instruction does not execute and outputs are not updated.
Default is set.
Input to the instruction.
Default is set.
Description:
Enable output.
The output of the instruction.
Rockwell Automation Publication 1756-RM003N-EN-P - October 2011
page 327.
for information on the syntax of expressions within
Type
FBD_BOOLEAN_NOT
Format Description
Structure BNOT structure