IEC 60848:2013 defines the GRAFCET specification language for the functional description of the behaviour of the sequential part of a control system. It specifies the symbols and rules for the graphical representation of this language, as well as for its
DS/EN 60848:2013 history
2013DS/EN 60848:2013 GRAFCET specification language for sequential function charts
2003DS/EN 60848:2003 GRAFCET specification language for sequential function charts