Automation Glossary: PLC (Programmable Logic Controller)
What Is A PLC?
A PLC, or Programmable Logic Controller, is a specialized digital computer used to manage machines and processes, particularly in industrial settings. Built to endure tough environments, such as extreme temperatures, vibrations, and electrical interference, PLCs are robust industrial computers. They function by storing programmable instructions in memory, which are executed repeatedly in cycles. These instructions control the operation of various input and output devices, including sensors, motors, and actuators. Due to their flexibility, PLCs are employed to automate an array of tasks, ranging from basic on/off functions to more intricate sequential control systems.
What Are PLCs Used For?
Manufacturing
- Assembly Lines: Operating robotic arms, conveyor belts, and machinery for efficient product assembly.
- Machine Tools: Automating production with CNC machines, lathes, and milling machines.
- Packaging: Managing packaging systems, labeling processes, and sealing equipment.
Process Industries
- Chemical Plants: Controlling chemical reactions, regulating temperature, pressure, and flow rates.
- Power Plants: Overseeing power generation, distribution, and efficient energy use.
- Water Treatment: Automating purification steps like filtration, disinfection, and chemical dosing.
Other Industries
- Automotive: Assisting vehicle manufacturing and testing, including engines and assembly lines.
- Food and Beverage: Overseeing food processing, ensuring proper packaging, and streamline distribution.
Related Terms
Occupancy detection within vehicles is a technological system engineered to determine the presence and number of individuals inside a vehicle....
A tensile tester is a device designed to quantify the tensile strength of substances, representing the maximum force a material can endure before fracturing under tension....
Products and Services
Further Reading
It is most likely the goal of every company to have Smarter Machines. But what is a “Smart Machine?” Ask 100 people that question and you will probably get 100 different answers. In my opinion the definition of a Smart Machine is pretty simple
October 24, 2019
If you are a plant, operations, facility managers, or C-level executives of a process manufacturing facility, then chances are you do not get deeply involved in the status of your control system and infrastructure. Your interaction with the control system may be periodic updates that you receive from an engineering
September 20, 2016
Control system programming is both an art and a science. Utilizing multiple tools, languages, and functions allow engineers to produce a creative solution. However, due to the multiple methods and tools available, the road to success can vary greatly depending path chosen
July 26, 2017