NOT block

Short summary

Name	`NOT`
→POU type	→function
Category	Standard (safe), Bitstring
Conform to →IEC-standard	no restrictions
Graphical interface
Available since	version 1.0.0 (for Neuron Power Engineer) - initial variant version 3.8.0 (for library `Standard (safe)`): block provided in this library

The block returns the bitwise complement of the input. All set bits of the input are reset and all non-set bits of the input are set.

	Identifier	→Data type
Inputs:	`IN`	`BOOL`, `BYTE`, `WORD`, `DWORD` or `LWORD` (corresponds to →generic data type `ANY_BIT`)
Return value:	–	`BOOL`, `BYTE`, `WORD`, `DWORD` or `LWORD` (corresponds to →generic data type `ANY_BIT`)

Input EN and output ENO are available when →calling the block. See "Execution control: EN, ENO" for information on input EN and output ENO.

See:

"Blocks for safe logic" whether this block is supported for developing safety-relevant applications.
"Highlighting safe logic in the FBD-editor" for the effects when using the block as a block for safe logic.

PROGRAM Test

VAR

        result1, result2 : BOOL;

    END_VAR

    result1 := NOT(TRUE);     (* The variable 'result1' evaluates to 'FALSE'. *)

    result2 := NOT(FALSE);    (* The variable 'result2' evaluates to 'TRUE'.  *)

END_PROGRAM

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