The attribute defines a prefix for variables of a structured data type. The prefix must be prepended to the identifier of variables that are declared by this type.

Insert location: In the line before the declaration of a structured data type

Syntax:

{attribute 'nameprefix' := '<prefix>'}

{attribute 'nameprefix' := 'point'} 
TYPE DATAPOINT :
STRUCT
	iX: INT;
	iY: INT;
END_STRUCT
END_TYPE

PROGRAM PLC_PRG
VAR
	pointA : DATAPOINT;
	pB : DATAPOINT; 
END_VAR
pointA.iX := 1;
pointA.iY := 10;
pB.iX := 2;
pB.iY := 20;