Attribute ‘hide’

This pragma prevents variables from being visible in the display of the ‘List components’ function, in the input assistant or in the declaration part in online mode.

Syntax:

{attribute 'hide'}

Insertion position: line above the line with the declaration of the variables.

Example

The function block myPOU uses the attribute {attribute 'hide'}:

FUNCTION_BLOCK myPOU
VAR_INPUT
 a:INT;

 {attribute 'hide'}
 a_invisible: BOOL;

 a_visible: BOOL;
END_VAR

VAR_OUTPUT
 b:INT;
END_VAR

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

PROGRAM PLC_PRG
VAR
 POU1, POU2: myPOU;
END_VAR

While an input value for POU1 is now implemented, the ‘List components’ function, which opens when typing POU1. (in the implementation part of PLC_PRG), displays the variables a, a_visible and b, but not the hidden variable a_invisible.

Note

With the pragma hide_all_locals you can hide all local variables of a declaration.

Note

If the pragma hide is used in compiled libraries for variables and signatures, these variables and signatures are also not displayed in the library manager.

See also

• Attribute ‘hide_all_locals’