Control Logic Design

Control logic design is the process of determining input and output devices for an automated system and programming control logic (such as ladder diagrams) to orchestrate the components of the automated system in order to produce products that meet a customer's requirements. There are three textual languages and three graphical languages (IEC 61131-3) used for control logic design.

The textual languages are:

• Instruction list
• Structure Text
• Sequential Function Chart (textual version)

The graphical languages are:

• Ladder Logic
• Function Block Diagram
• Sequential Function Chart (graphical version)