IEC 61499

The European Standard EN 61499, the 61499 is based on the international standard IEC, is concerned with function blocks for industrial control systems. It is valid as a DIN standard for Germany.

The specification IEC 61499 or EN 61499 defines a generic model for distributed control systems. It provides an object- oriented development of IEC 61131 or EN 61131 Represents the cyclic execution model of EN 61131 is replaced by EN 61499 by an event-driven execution model.