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Development of an Editor and Howling Engine for Realtime Software Programmable Logic Controller based on Intelligent Agents  

Cho, Young-In (수원대학교 IT대학 컴퓨터학과)
Publication Information
Journal of KIISE:Software and Applications / v.32, no.12, 2005 , pp. 1271-1282 More about this Journal
Abstract
Recently, PC-based control is incredibly developed in the industrial control field, but it is difficult for PLC programming in PC. Therefore, I need to develop the softeware PLC, which support the international PLC programming standard(IECl131-3) and can be applied to diverse control system by using C language. In this paper, I have developed the ISPLC(Intelligent Agent System based Software Programmable Logic Controller). In ISPLC system, LD programmed by a user which is used over $90\%$ among the 5 PLC languages, is converted to IL, which is one of intermediate codes, and IL is converted to the standard C rode which can be used in a commercial editor such as Visual C++. In ISPLC, the detection of logical error in high level programming(C) is more eaier than PLC programming itself The study of code conversion of LD->IL->C is firstly tried in the world as well as KOREA. I developed an execution engine with a good practical application. To show the effectiveness of the developed system, 1 applied it to a practical case, a real time traffic control(RT-TC) system. ISPLC is minimized the error debugging and programming time owing to be supported by windows application program.
Keywords
PC based Control; Software PLC; HMI(Human-Machine-Interface); IEC1131-3;
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