✦ LIBER ✦
124 Recent advances in the stabilization problem for low dimensional systems: W.P. Dayawansa, pp 1–8
- Publisher
- Elsevier Science
- Year
- 1993
- Tongue
- English
- Weight
- 89 KB
- Volume
- 1
- Category
- Article
- ISSN
- 0967-0661
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✦ Synopsis
A universal methodology and a system to program PLCs are presented. The system front end is a Graphical User Interface (GUI), supporting the relay ladder language and a simulator. The GUI is a user-friendly environment with menus, icons and a point-and-click interface. After the GUI, an Intermediate Literal Language (ILL) implements a virtual PLC. ILL file.s are then used by specific parser-drivers (developed with lex and yacc utilities), to translate ILL det'mitions into real PLC statements. Object-oriented programming techniques, based on C++, are used, along with Blaise Win++ class library. The system runs as a Microsoft Windows application.