REQUIREMENT AND USE FOR REMOTE TEACHING OF DISCRETE EVENTS SYSTEMS

Today, Internet makes possible remote access to PLC (Programmable Logic Controllers) remote maintenance, monitoring, supervision and follow-up of plants. In this article, we are interested in the possibilities that Internet offers for the D.E.S (Discrete Events System) teaching. The concept of distributed practical work room is proposed in order to facilitate the technical know-how transmission. The idea consists for students, on the one hand to use a real PLC and specialized software via Internet and on the other hand, to check their controller program by the mean of a plant simulation. In addition, the controller program verification problem is proposed. Indeed, as well within the framework of the real as simulated plant use, it is necessary to develop controller verification tools able to cooperate with the teacher and students and having explanatory capacities.