Adaptation of Control Programs to Asynchronous I/O Updates

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21230%2F04%3A03100714" target="_blank" >RIV/68407700:21230/04:03100714 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Adaptation of Control Programs to Asynchronous I/O Updates
Original language description
The paper discusses the problems with adaptation of industrial control programs from synchronous to asynchronous I/O update when peripherals are redeveloped with the aid of control area networks (CANs). CANs decrease necessary wires between controllers and technology, but they have lower data update rates in comparison with I/O buses. To accelerate and optimize I/O polling, I/O data can be updated asynchronously to evaluations of control algorithms.If a control program was written with the assumption ofsynchronous I/O updates, its adaptation to asynchronous I/O updates requires its partial modifications to exclude possibility of dataraces. The simplest and robust way represents simulating of synchronous I/O updates by copying all input values into anarray before each evaluation of the program, but such spare buffering generally increases responses to events. Therefore, the paper presents conditions for running the program (or its parts) without spare buffering of I/O data.
Czech name
Není k dispozici
Czech description
Není k dispozici

Publication year
2004
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
Preprints IFAC-MIM'04, IFAC Conference on Manufacturing, Modelling, Management and Control
ISBN
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ISSN
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e-ISSN
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Number of pages
8
Pages from-to
126-133
Publisher name
University of Patras
Place of publication
Patras
Event location
Athens
Event date
Oct 21, 2004
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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