Short summary

Name	`SEL_WORD`
→POU type	→function
Category	IEC-block, SelectEnh
Conform to →IEC-standard	not defined in IEC-standard
Graphical interface
Available since	version 1.21.0 (for logi.CAD 3)

Functionality

The block makes a binary selection – analogous to the SEL block. In contrast to that block, SEL_WORD allows the connection with WORD only (for IN0 and IN1).

Inputs, return value

	Identifier	→Data type	Description
Inputs:	`G`	`BOOL`	selector
	`IN1`	`WORD`	1st value
	`IN2`	`WORD`	2nd value
Return value:	–	`WORD`

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 .

Example for usage within ST-editor

PROGRAM Test
    VAR
        result1 : WORD;
        result2 : WORD;
    END_VAR
    result1 := SEL_WORD(G := FALSE, IN0 := WORD#0001, IN1 := WORD#0002);   (* The variable 'result1' evaluates to 'WORD#0001'. *)
    result2 := SEL_WORD(G := TRUE, IN0 := WORD#0001, IN1 := WORD#0002);    (* The variable 'result2' evaluates to 'WORD#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.