Enhanced real-time execution of modular control software based on IEC 61499

The ever increasing complexity of manufacturing systems demands for new real-time control infrastructures. With the new standard IEC 61499 the IEC introduced a base for such a control infrastructure. An open issue of this standard is the missing definition of real-time execution. Based on existing real-time execution theory different execution models for real-time execution of IEC 61499 control applications are analyzed in this work. A novel execution approach for an efficient execution model is presented. This new approach would serve as basis for a new IEC 61499 execution environment