1. Towards technological realization
1.1 From functional GRAFCET to technological GRAFCET
GRAFCET (step-transition control graph) is a graphical tool for representing the specifications of a sequential automation system. It is both easy to use and formally rigorous.
It is based on the notions of stages, to which actions are associated, and transitions, to which receptivities are associated. It describes the orders issued by the control part to the operative part, highlighting the actions generated and the events that trigger them. This representation is closely linked to the notion of process evolution.
To complete the order part, we recommend dividing the specifications into two successive, complementary levels.
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Towards technological realization
Bibliography
Works
Websites
AFCET GRAFCET group
http://www.gsip.cran.u-nancy.fr/GRAFCET/groupe/groupe_old.html
EEA Club GRAFCET group
http://japura.lurpa.ens-cachan.fr/grafcet/generalites/groupe_fr.html
...Standards
- Schematics, diagrams, tables – GRAFCET function diagram for describing control logic systems - NF C03-190 - 9-1995
- Documentation and graphic symbols – Functional diagrams for control systems – GRAFCET" function diagram – Extensions of basic concepts - UTE C03-191 - 6-1993
- Établissement de diagrammes fonctionnels pour systèmes de commande - IEC 60848 - 12-1988
- Langage de spécification GRAFCET pour diagrammes...
Organizations
WADAF
French Association for Economic and Technical Cybernetics (AFCET)
Manufacturers, constructors
non-exhaustive list
Merlin Gérin, Télémécanique
Siemens
Omron
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