Programmable Logic Controller
A Programmable Logic Controller (PLC) is a ruggedized industrial digital computer designed for controlling manufacturing processes, such as assembly lines, robotic devices, or any activity that requires high reliability, ease of programming, and process fault diagnosis. It uses a programmable memory to store instructions and execute specific functions, including logic, sequencing, timing, counting, and arithmetic, to control machines and processes through digital and analog inputs/outputs. PLCs are essential in industrial automation for real-time control and monitoring of physical systems.
Developers should learn PLC programming when working in industrial automation, manufacturing, or control systems engineering, as it enables the automation of machinery and processes in factories, power plants, and infrastructure. It is crucial for applications requiring robust, real-time control with high reliability, such as in automotive assembly, food processing, or water treatment plants, where PLCs handle tasks like motor control, sensor monitoring, and safety interlocks. Knowledge of PLCs is valuable for roles involving SCADA systems, IoT integration in industrial settings, or maintenance of automated equipment.