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Object: Method

Symbol: _cds_icon_method.png

Keyword: ‎METHOD‎

Methods are an extension of the IEC 61131-3 standard and a tool for object-oriented programming which is used for data encapsulation. A method contains a declaration and an implementation. However, unlike a function, a method is not an independent POU, and it is subordinated to a function block or program. A method can access all valid variables of the superordinate POU.

You can add a method below a program or a function block. Click “Project  Add Object  Method”. Then the “Add Method” dialog opens.

You can use interfaces for the organization of methods.

For more information, see: ⮫ “Implementation of an Interface ”

NOTICE

NOTICE
NOTICE
NOTICE

NOTICE

NOTICE

When you copy a method below a POU and add it below an interface, or move the method there, the contained implementation is removed automatically.

  • Declaration
  • Implementation
  • Calling a Method
  • Recursive method call
  • Special methods of a function block
  • Dialog: “Add Method”
  • Input support when generating inheriting POUs