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PLC (Programmable Logic Controller) is a specialized computer used to control machines and processes in industries. Its main purpose is to automate tasks, making operations more efficient, safe, and reliable.
Hereβs a simple breakdown of its role:
- Automation: PLCs replace manual control systems like switches or relays. They automatically control machinery based on programmed instructions, reducing human effort.
- Monitoring: It monitors inputs (like sensors, switches, and other devices) and outputs (like motors, lights, and valves). For example, it can sense the temperature of a machine and adjust the speed of a fan accordingly.
- Flexibility: PLCs can be easily reprogrammed for different tasks. If a production line changes, you can update the program without needing to replace physical components.
- Safety and Reliability: In critical applications (like in factories or power plants), PLCs ensure that machines work within safe limits. They can stop equipment if something goes wrong, preventing accidents.
In short, PLCs are used to make processes more efficient, safe, and flexible by automating and controlling industrial machinery.