Yerger describes the Sequential Function Chart language as being “the oddball of the five [PLC programming] languages. We don't view it as a language, it’s a structure of the flow of the logic, ...

Ladder Diagram, based on the most common form of PLC programming language. Structured Text, similar to high-level information technology (IT) programming languages such as C or Pascal. Function Block ...

A program can be written in any of the defined programming languages. A program can also read and write to input/output variables and communicate with other programs. The execution of different parts ...

Logic-based modules will provide support for specific PLC programming languages (e.g., IEC compiler) and commonly executed functions (e.g., dsp). I/O modules all take PuffinPLC points and either ...