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MULTI-MASTER PROFIBUS DP MODELLING AND WORST CASE ANALYSIS-BASED EVALUATION
Salvatore Cavalieri(1), Salvatore Monforte(1), Eduardo Tovar(2), Francisco Vasques(3)
(1) Department of Computer Science and Telecommunications Engineering,
Faculty of Engineering, University of Catania
Viale A.Doria, 6 95125 Catania, Italy
Tel.: +39 095 738 2362, Fax: +39 095 738 2397
e-mail: {salvatore.cavalieri, salvatore.monforte}@diit.unict.it
(2) Department of Computer Engineering, ISEP, Polytechnic Institute of Porto
Rua de São Tomé, 4200 Porto, Portugal
Tel.: +351.2.8340500, Fax: +351.2.8321159
e-mail: emt@dei.isep.ipp.pt
(3) Department of Mechanical Engineering, FEUP, University of Porto
Rua Dr.Roberto Frias, 4200-465 Porto, Portugal
e-mail: vasques@fe.up.pt
This paper provides an analysis of the real-time behaviour of the multi-master Profibus DP network. The analysis is based on the evaluation of the worst-case message response time and the results obtained are compared with those present in literature, pointing out its capability to perform a more accurate evaluation of the performance of the Profibus network.
Keywords: Fieldbuses, Profibus, Real-Time Systems, Worst Case Response Time
Session slot T-Tu-M20: Fieldbus/Area code 1e : Components and Instruments
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