The most basic function of a programmable logic controller is to emulate the functions of electromechanical relays. Discrete inputs are given a unique address, and a PLC instruction can test if the input state is on or off.

Mar 10, 2025 · A Programmable Logic Controller (PLC) collects information from sensors before applying programmed rules to the data and activating control devices, including motors, valves, and alarms, through output signals.

Jul 13, 2019 · PLC Definition: A programmable logic controller is a specialized computer designed to operate in industrial settings, managing and automating the mechanical processes of factories and plants. Functionality: PLCs handle tasks like timing and logic operations, significantly streamlining industrial processes.

Feb 27, 2024 · Acting as the central brain of machinery and processes, PLCs receive input from sensors, process the data through programmed logic, and generate output signals to control devices like motors and valves. They use a programming language, often ladder logic, resembling electrical relay diagrams.

A programmable logic controller or PLC is a general-purpose controller, applicable to many different types of process control applications. The word “programmable” in its name reveals just why PLCs are so useful: the end-user is able to program, or instruct, the PLC to do virtually any control function imaginable.

Feb 24, 2020 · Programmable Logic Controllers (PLCs) are industrial computers, with various inputs and outputs, used to control and monitor industrial equipment based on custom programming. PLCs come in many different sizes and form factors.

Mar 10, 2022 · In this article, we'll introduce the concept of a PLC and explain its basics. What Is a PLC? A PLC is an industrial-grade digital computer designed to perform control functions—especially for industrial applications.

Apr 5, 2024 · Programmable Logic Controllers (PLCs) are designed to monitor and regulate machines and manufacturing processes in industrial environments with automation technology. They can function as autonomous systems, optimising processes intelligently and independently. So, what is a PLC?

Feb 21, 2025 · A programmable logic controller (PLC) operates in a cyclic process with these steps: Input Scan (reads sensor data), Program Execution (executes logic based on inputs), Output Scan (updates actuators accordingly), and Housekeeping (performs diagnostics and communication).

A Programmable Logic Controller (PLC) is a digital computer that controls industrial equipment such as machines, assembly lines, or complex systems like water treatment plants. You can program these devices based on pre-set instructions to monitor input devices (like sensors) and control output devices (like motors or actuators).