dl-breadcrumbs__homedl-breadcrumb-item__separatorConfiguration and programmingdl-breadcrumb-item__separatorProgramming with CODESYSdl-breadcrumb-item__separatorCODESYS Development Systemdl-breadcrumb-item__separator...dl-breadcrumb-item__separatorReference, Programmingdl-breadcrumb-item__separatorPragmasdl-breadcrumb-item__separatorAttribute Pragmasdl-breadcrumb-item__separatorAttribute 'hide_all_locals'
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Attribute 'hide_all_locals'dl-permalink__symbolPermalink

The pragma prevents all local variables of a signature from being visible in the display of the 'List components' function, in the Input Assistant or in the declaration part in online mode. Moreover, these variables are hidden in the symbol configuration and therefore cannot be exported as symbols. The pragma is especially useful in library POUs to hide POU variables from users.

Affected features

  • Library management

  • Debugging

  • Input Assistant

  • Function "List components"

  • Monitoring

  • Symbol configuration

Syntax:

‎{attribute 'hide_all_locals'}‎

Insert location: First line above the declaration part of the POU

Example

The function block ‎FB_MyB‎ uses the attribute: 

{attribute 'hide_all_locals'}
FUNCTION_BLOCK FB_MyB
VAR_INPUT  
	iInB : INT; 
	{attribute 'hide'} 
	xInvisibleIn : BOOL; 
	xInit: BOOL; 
END_VAR
VAR_OUTPUT 
 	iOutB : INT; 
END_VAR 
VAR
	iCounter : INT;
	xVar : BOOL;
END_VAR

Two instances of the function block ‎FB_MyB‎ are defined in the main program.

PROGRAM PLC_PRG
VAR
	fbMyB1, fbMyB2: FB_MyB;
	iVar3: INT;
	iVar4: INT;
END_VAR

fbMyB1(iInB := 2, xInvisibleIn := TRUE, iOutB => iVar3);
fbMyB2(iInB := 2, iOutB => iVar4);
IF fbMyB2.iCounter > 100 THEN
	fbMyB2.xInit := TRUE;
END_IF

Now when you download the program to the controller, start it, and switch to online mode, the variables ‎iInB‎, ‎xInit‎, ‎iOutB‎, and ‎xReset‎ are displayed in the declaration editor. However, the hidden local variables ‎iCounter‎ and ‎xVar‎ are not displayed.