SA0115: Declarations with data type UNION

Function	Determines declarations of a UNION data type and declarations of variables of the type of a UNION.
Reason	The IEC-61131-3 standard has no provision for unions. The code becomes easier to port if there are no unions.
Importance	Low

Samples:

Union U_Sample:

TYPE U_Sample :                  // => SA0115 
UNION
    fVar    : LREAL; 
    nVar    : LINT; 
END_UNION
END_TYPE

MAIN program:

PROGRAM MAIN
VAR
    uSample : U_Sample;          // => SA0115 
END_VAR