Size of programming in SFC language
Diagrams in PL7 Grafcet language are automatically restructured by the PL7 application converter into diagrams in Control Expert SFC language.
The corresponding Control Expert SFC language has a single programming page with a maximum of 200 lines.
In the rare cases when the Grafcet programming exceeds this limits, a
Converror message will be displayed in the output window.
In Control Expert SFC language, it is not possible to have several links going towards the same connector. The PL7 application converter automatically replaces this configuration with an equivalent Control Expert configuration.
However, it is impossible, in SFC language, to have a
link from bottom to top. If your PL7 application to be converted contains this type of link, you must manually complete the diagram using the
Converror message that is displayed in the output window.
The following screen gives an example of a link from bottom to top drawn up in PL7 Grafcet language: this part of the program cannot be automatically converted.
