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4. Application study: Alograf
Alograf is a software workshop that enables high-performance automation applications to be developed in PLC language and on a standard IT platform, then loaded and run on an "open" target machine: open PLC, industrial computer, industrial PC or dedicated microcomputer board.
Compliant with the IEC 61131 standard, Alograf produces compiled and optimized C or C++ code directly from a Grafcet description, enabling the structuring and realization of fast, deterministic real-time acquisition and control applications.
Alograf's "stability-aware" Grafcet processing algorithm (AARS) guarantees deterministic, synchronous automation behavior, in line with the recommendations of IEC 60848. This algorithm, combined with a sampling mechanism based on Shannon's work, enables Alograf to respect the temporal aspects of the Grafcet.
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Application study: Alograf
Bibliography
In Engineering Techniques
Standards
- Documentation and graphic symbols – Functional diagrams for control systems – GRAFCET" function diagram – Extension of basic concepts. - UTE C03-191 - 06-93
- Langage de spécification GRAFCET pour diagrammes fonctionnels en séquence. - CEI 60848 - 02-02
- Automates programmables. - CEI 61131 - 2003
Websites
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Association francophone des utilisateurs de Linux (AFUL) http://www.aful.org
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