<structure block reference variable declaration>

  ┌◄──────────────── . ───────────────┐
──┴─<structure block type identifier>─┴─ REFERENCE ──<identifier>──────┤

A STRUCTURE BLOCK REFERENCE VARIABLE declaration declares a structure reference variable with the type of the structure block type identifier. A STRUCTURE BLOCK REFERENCE ASSIGNMENT statement can then be used to assign an instance of the structure block of the declared type to this variable.

A reference to an embedded structure block is allowed by the following syntax:

outerSBtype.embeddedSBtype REFERENCE <id>

Identifiers

<structure block reference variable>

An identifier that is associated with a structure block reference in a STRUCTURE BLOCK REFERENCE VARIABLE declaration.

The following example shows the declaration of a structure block reference variable:

TYPE STRUCTURE BLOCK SB;
  BEGIN
  TYPE STRUCTURE BLOCK SBINNER;
    BEGIN
    REAL X;
     .
     .
    END;
  SBINNER SBINNERVAR;
  END;
SB SBVAR;
SB.SBINNER REFERENCE SBINNER_REF;
SBINNER_REF := SBVAR.SBINNERVAR;