| Popis: |
After the Grafcet definition, rules of evolution and its interpretation have been given, we show, how in practice Grafcet nakes the dialogue easier between automatism builder and the automatic system users, especially for introducing directions for running and securities of the system. On the other hand, thanks to its properties and possibilities of analysis which are offered, Grafcet allows to use a methodology of “ a priori ” verification of specifications. At last, Grafcet is a tool fitted to a direct synthesis, that is a direct passing from specifications to realization, whatever the techology used (programmed or hard-wired realization, programmable controllers …).Grafcet becomes a single tool for designing a logical system, from specifications to realization, maintenance, servicing …). So, Grafcet is particularly adapted for C.A.D.We present main parts of such a system. |
