The pragma causes input variables of a function block to be initialized on each call
of the function block. If an input variable is affected which expects a pointer and
this pointer has been removed during an online change, then the variable is initialized
to zero.
Syntax:
{attribute 'initialize_on_call'}
Insert location: Always in the first line of the declaration part for the entire function block, and also in a line above the declaration of the individual input variable.
Example
{attribute 'initialize_on_call'}
FUNCTION_BLOCK fb
VAR_INPUT
{attribute 'initialize_on_call'}
pInt : POINTER TO INT := 0;
{attribute 'initialize_on_call'}
iVal : INT := 0;
END_VAR