Title :
A simulation model based on a stochastic Petri net approach for dependability evaluation of Profibus-DP networks
Author :
Portugal, Paulo José ; da Silva Carvalho, A.
Author_Institution :
Fac. de Engenharia, DEEC, Porto
Abstract :
The paper proposes a dependability model which enables the evaluation of Profibus-DP networks in scenarios of transient faults which affect data communications. The full behavior of Profibus-DP communication stack is modeled, including: cyclic process data exchange between master and slave stations; configuration, parameterization and diagnostics of slave stations. The model is based on a high level stochastic Petri net formalism referred as stochastic activity networks (SAN), supported by the Mobius tool. High modeling power, state-of-the-art analytical and simulation solutions, and a flexible and integrated environment are their main features. Dependability measures are established from the fulfillment of the real-time constraints (deadlines) defined on process data messages exchanged between master and slave stations. The reward concept is used to define the measures, which are obtained by means of a simulation approach. A case study is proposed to assess the model performance
Keywords :
Petri nets; field buses; industrial control; stochastic processes; Mobius tool; Profibus-DP network; cyclic process data exchange; data communication; dependability evaluation; stochastic Petri net; stochastic activity network; Analytical models; Automatic control; Circuit faults; Communication system control; Control systems; Electromagnetic interference; Field buses; Manufacturing automation; Master-slave; Stochastic processes;
Conference_Titel :
Emerging Technologies and Factory Automation, 2005. ETFA 2005. 10th IEEE Conference on
Conference_Location :
Catania
Print_ISBN :
0-7803-9401-1
DOI :
10.1109/ETFA.2005.1612716