Structure of a Grafcet
Graphic representation of the elements
- step and initial step
- transitions and transition conditions – continuously effective action
- time-dependent transition condition
- saved effective action
Graphic representation of process structures
- process chain
- alternative and parallel branching
- feedback, jumps and comments
Structuring Grafcet through hierarchies
- including step and initial step
- macro and macro steps
- overriding commands
Practice excercises / project tasks
