Title :
A specific implementation of IEC 61131-3 software model
Author :
Plaza, I. ; Medrano, C.
Author_Institution :
EUPT, University of Zaragoza, Spain
fDate :
June 28 2004-July 1 2004
Abstract :
In this paper, we review the main concepts of IEC 61131-3 software model and we discuss some of the weak and ambiguous points of the standard that should be clarified before implementing it. We also show the main guidelines of a specific implementation, based on POSIX/C and its Real- Time extensions, which is a much more general framework. This will facilitate the exccution of PLC-like system on a wide range of computers, provided their operating system is POSlX compliant. We consider the example of PC s and RTLinux.
Keywords :
Artificial intelligence; Automatic control; Automation; Buildings; Guidelines; IEC standards; Linux; Logic programming; Programmable control; Standards organizations; Control systems; IEC 61 I3 I; POSIX; Programmable Logic Controllers;
Conference_Titel :
Automation Congress, 2004. Proceedings. World
Conference_Location :
Seville
Print_ISBN :
1-889335-21-5
