This program flow nature of Sequential Function Chart is why it’s so often used. “It’s great for stepped or discrete sequencing. A classic example would be a batching engine where you might have, say, ...

Each language also uses an organization language commonly known as Sequential Function Chart. This language helps organize the sequences of functions in a PLC program.

Figure 6: FBD for program ScanInput. D. Function and Function blocks. These are the basic building blocks, containing a data-structure and an algorithm. For our study example, 1) The required function ...