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 ...

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 ...

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 ...