Comparative Study of Using CNet, IEC 61499, and Statecharts for Behavioral Models of Real-time Control Applications

This paper identifies different aspects of modeling techniques used for the design and implementation of industrial distributed real-time control applications. These cover technical means for structuring, modeling and expressing timing, and representing concurrency, as well as graphic expressiveness and intuitive comprehension. These criteria are applied to consider one by one IEC 61499 function blocks, UML statecharts and Petri net based CNet. The paper shows how the addressed features are expressed using each modeling technique. Finally, the assets and drawback of the considered description means are compared