This standard BS EN 60848:2013 GRAFCET specification language for sequential function charts is classified in these ICS categories:
29.020 Electrical engineering in general
35.060 Languages used in information technology
01.100.25 Electrical and electronics engineering drawings
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 interpretation and has been prepared for automated production systems of industrial applications. This third edition cancels and replaces the second edition published in 2002 and constitutes a global technical revision with the extended definition of the concept of variables introducing: internal variable, input variable and output variable.