GRAFCET
This chapter provides an introduction to creating and simulating GRAFCET plans with FluidSIM. See norm DIN EN 60848 for the complete specification of the GRAFCET description language. Festo Didactic provides a range of training documentation for more detailed introductions to GRAFCET.
Unlike an SPS programming language, such as Sequential Function Chart (SFC), GRAFCET is a graphic description language that describes the logical behaviour and operation of a control system or a process - regardless of the technical software and hardware implementation. FluidSIM can be used to both create and simulate GRAFCET plans. The term GRAFCET is also used as a synonym for a GRAFCET plan. It should be obvious from the context whether the word GRAFCET refers to the plan or the language.
A GRAFCET essentially describes two aspects of a control system, according to specified rules: the actions (commands) to be carried out and the sequence of execution. The elementary components of a GRAFCET are steps, actions and transitions and can be used in the same way as pneumatic or electrical components. To achieve a uniform operating concept, the GRAFCET elements feature connections that can be used to link them to each other (as with all other FluidSIM components).
Stored effective actions (allocations)
Linking GRAFCET variables with the electrical part of FluidSIM
Quick reference for the FluidSIM-relevant GRAFCET concepts