The operator is an extension of the IEC 61131-1 standard.
At runtime, the operator yields the position of a variable in the declaration part
or in the implementation part of a POU. The operator has to be assigned the variables
of type STRING in the declaration part or in the implementation part.
Result of __POSITION
-
Declaration part:
'Line <line number> (Decl)' -
Implementation part:
'Line <line number>, Column <Column number> (Impl)'
Example
PROGRAM PROG1
VAR
strPOS : STRING := __POSITION(); //Liefert die Zeilennummer dieser Deklaration
strlocalPOS : STRING;
END_VAR
strlocalPOS := __POSITION(); //Liefert Zeilen- und Spaltennummer dieser Zuweisung