Model of mechanism behavior for verification of PLC programs

José J.B. Machado (1) , Bruno Denis (2) , Jean-Jacques Lesage (2) , Jean-Marc Faure (2) , Jaime C. L. Ferreira da Silva (1)

1 Department of Mechanical Engineering
2 LURPA - Laboratoire Universitaire de Recherche en Production Automatisée

More extensive work on formal methods is now available for checking PLC (Programmable Logic Controller) programs. To verify a PLC program, it is necessary to consider a set of properties to prove and one of the most interesting problems that the designers must deal is to deduce a set of properties that traduces all the safety requirements of the system behavior. In this paper, we explore the contribution of such a plant model within the context of deduction, in a systematized way, of a set of properties to prove, verifying the PLC program. Our study is primarily experimental in nature and based on a case study. A set of properties to be checked based on detailed plant model is proposed. We then analyze how a Symbolic Model-Checking tool (the NuSMV has been selected) ensures verification of these properties either with or without the considered plant model.

Mots clés: Discrete event systems; Plant model; Formal verification; Model-checking

Domaines: Automatique / Robotique

José J.B. Machado, Bruno Denis, Jean-Jacques Lesage, Jean-Marc Faure, Jaime C. L. Ferreira da Silva. Model of mechanism behavior for verification of PLC programs. 17th International Congress of Mechanical Engineering (COBEM'03), Nov 2003, São Paulo, Brazil. Paper 0831, 10 p. ⟨hal-00424034⟩