With SIMATIC PCS 7 the graphical engineering allows you to create even complex process sequences clearly and simply. Here, sequencers and Sequential Function Charts (SFCs) are produced centrally in a graphical SFC editor with a clearly structured interface. The graphical formula editor supports arithmetic operations as well as Boolean operators and functions. When programming SFCs, it results in considerable time-savings and more data consistency, minimized rates of error, and verifiable improvements in quality at the same time.
For a clear and efficient engineering, the equipment used in a plant can be grouped into "equipment modules" (EMs). The recipe requirements are realized in the equipment phase (EPH). This makes it possible to separate process recipes and EMs. Equipment phase types can address one or more EMs. This offers the advantage of a flexible engineering of recipes.