IEC 61131 was previously known as IEC 1131. See PLC. Graphical ladder logic function block diagram sequential function chart Textual structured text instruction list The following example of ...

Structured Text, similar to high-level information technology (IT) programming languages such as C or Pascal. Function Block Diagram, a graphical language where users connect blocks of functionality ...

Block diagrams can be written, usually in boxes, with the headings input, process, and output. When planning how a circuit will function, these headings are then used to plan what the input ...

The IEC 61131-3 languages Function Block Diagram (FBD) and the corresponding ST (Structure Text) has been used as vehicles for this tour. Programmable Controllers (PLC) are the backbone of most ...