Attribute: init_namespace

The effect of this pragma is that a variable of the type STRING or WSTRING, which is declared in a library function block with this pragma, is initialized when used in the project with the current namespace of the library.

Syntax

{attribute 'init_namespace'}

Insert location: The line above the line with the declaration of the variables in a library function block.

Example 272.

The function block POU is provided with the necessary attributes:

FUNCTION_BLOCK POU
VAR_OUTPUT
    {attribute 'init_namespace'}
    myStr: STRING;
END_VAR

An instance fb of the function block POU is defined within the main program PLC_PRG:

PROGRAM PLC_PRG
VAR
    fb:POU;
    newString: STRING;
END_VAR
newString := fb.myStr;

The myStr variable is initialized with the current namespace (example: MyLib). This value is assigned to newString in the main program.