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Timed automaton models for simple programmable logic controllers

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2 Author(s)
Mader, A. ; Inst. of Comput. Sci., Nijmegen Univ., Netherlands ; Wupper, H.

We give timed automaton models for a class of Programmable Logic Controller (PLC) applications, that are programmed in a simple fragment of the language Instruction Lists as defined in the standard IEC 1131-3. Two different approaches for modelling timers are suggested, that lead to two different timed automaton models. The purpose of this work is to provide a basis for verification and testing of real-time properties of PLC applications. Our work can be seen in broader context: it is a contribution to methodical development of provably correct programs. Even if the present PLC hardware will be substituted by e.g. Personal Computers, with a similar operation mode, the development and verification method will remain useful

Published in:

Real-Time Systems, 1999. Proceedings of the 11th Euromicro Conference on

Date of Conference:

1999

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