Vertical Distribution of the Modular Local Control Structure using Industrial Ethernet

This paper presents the distributed implementation of the local modular control structure using Industrial Ethernet as communication protocol among controllers in the context of supervisory control theory. From a specific implementation model, this work treats practical issues of programmable logic controllers when the physical control system is distributed. According to implementation model used, the present work deals with vertical distribution, which operational procedures are implemented in different programmable logic controllers and the modular supervisors and product system in a unique controller. Finally, the work shows an example of a manufacturing system in which is proposed a physical topology of control structure.