This document presents an introduction to programmable logic controllers (PLCs) delivered by Global Technocrats and Consultants. It discusses PLC programming options including ladder diagrams and languages like RSLogix 5000. It also covers PLC basics such as inputs and outputs, architecture, wiring, functions, and network protocols. Specific protocols mentioned include ASibus, Profibus, DeviceNet and Modbus. The document concludes with review questions about PLC applications, inputs, outputs and relay behavior.