NOT block

Short summary

Name	`NOT`
→POU type	→function
Category	IEC-block, Bitstring
Conform to →IEC-standard	no restrictions
Graphical interface
Available since	version 1.0.0 (for Neuron Power Engineer)

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

When creating your application within the ST-editor, enter a call of a block by typing the text as requested by the syntax or use Content Assist.