OR block

Short summary

Name	`OR`
→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 result of a bitwise OR operation of all values connected to the inputs of ANY_BIT.

Compare: "IOR block" for OR operation for values of ANY_INT.

	Identifier	→Data type	Description
Inputs:	`IN1`	`BOOL`, `BYTE`, `WORD`, `DWORD` or `LWORD` (corresponds to →generic data type `ANY_BIT`)	1st value
	`IN2`	`BOOL`, `BYTE`, `WORD`, `DWORD` or `LWORD` (corresponds to →generic data type `ANY_BIT`)	2nd value
	... (extensible until)
	`IN16`	`BOOL`, `BYTE`, `WORD`, `DWORD` or `LWORD` (corresponds to →generic data type `ANY_BIT`)	16th value
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

        resultB1, resultB2, resultB3, resultB4 : BOOL;

        resultW1, resultW2, resultW3, resultW4 : WORD;

    END_VAR

    resultB1 := OR(IN1 := FALSE, IN2 := FALSE);       (* The variable 'resultB1' evaluates to 'FALSE'. *)

    resultB2 := OR(IN1 := FALSE, IN2 := TRUE );       (* The variable 'resultB2' evaluates to 'TRUE'.  *)

    resultB3 := OR(IN1 := TRUE,  IN2 := FALSE);       (* The variable 'resultB3' evaluates to 'TRUE'.  *)

    resultB4 := OR(IN1 := TRUE,  IN2 := TRUE );       (* The variable 'resultB4' evaluates to 'TRUE'.  *)

    resultW1 := OR(IN1 := 16#0001, IN2 := 16#0001);   (* The variable 'resultW1' evaluates to '16#0001'. *)

    resultW2 := OR(IN1 := 16#0001, IN2 := 16#0002);   (* The variable 'resultW1' evaluates to '16#0003'. *)

    resultW3 := OR(IN1 := 16#0002, IN2 := 16#0001);   (* The variable 'resultW1' evaluates to '16#0003'. *)

    resultW4 := OR(IN1 := 16#0002, IN2 := 16#0002);   (* The variable 'resultW1' evaluates to '16#0002'. *)

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.