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Designing Real-Time Systems Based on Mono Master Profibus-DP Networks
Ref: HURRAY-TR-0013       Publication Date: 29, Nov, 2000

Designing Real-Time Systems Based on Mono Master Profibus-DP Networks

Ref: HURRAY-TR-0013       Publication Date: 29, Nov, 2000

Abstract:
Profibus networks are widely used as the communication infrastructure for supporting distributed computer-controlled applications. Most of the times, these applications impose strict real-time requirements. Profibus-DP has gradually become the preferred Profibus application profile. It is usually implemented as a mono-master Profibus network, and is optimised for speed and efficiency. The aim of this paper is to analyse the real-time behaviour of this class of Profibus networks. Importantly, we develop a new methodology for evaluating the worst-case message response time in systems where high-priority and cyclic low-priority Profibus traffic coexist. The proposed analysis constitutes a powerful tool to guarantee prior to runtime the real-time behaviour of a distributed computer-controlled system based on a Profibus network, where the real-time traffic is supported either by high-priority or by cyclic poll Profibus messages.

Authors:
Salvatore Monforte
,
Mário Alves
,
Eduardo Tovar
,
Francisco Vasques


16th IFAC Workshop on Distributed Computer Control Systems (DCCS'2000), pp 36-43.
Sydney, Australia.



Record Date: 1, Jul, 2000