Method of drafting control and instrumentation technology

A method for automatically producing program code for instrumentation and control, for operating an installation with process-engineering components, where a machine-readable technology diagram for the installation is provided which contains both a graphical diagram of the process engineering and a further graphical diagram of the program code, the graphical diagram of the process engineering and the further graphical diagram of the program code being shown together in the machine readable technology diagram, and the further diagram being divided into a number of sections which each including one or more interlinked symbols which schematically represents the program code to be produced, comprising:

• a) automatically assigning each symbol in a section a functional module, wherein links between symbols are automatically used to stipulate links between functional modules so that a function diagram for the section of the further diagram is formable from the functional modules and respective links;
• b) automatically producing, using each function diagram, a respective individual sequence of the program code for each section;
• and
• c) automatically producing the program code from the produced individual sequences.