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A PLC is a computer specially designed to operate reliably under harsh industrial environments such as extreme temperatures, wet, dry, and/or dusty conditions. What is the full form of PLC?

A PLC is a computer specially designed to operate reliably under harsh industrial environments such as extreme temperatures, wet, dry, and/or dusty conditions. What is the full form of PLC? Correct Answer Programmable Logic Controller

PLC:

  • A PLC (Programmable Logic Controller) also known as PLC is a specialized computer used to control machines and processes.
  • PLC operates on digital signals.
  • The PLC uses a programmable memory to store/ save instructions and specific functions that include ON/OFF control, counting, arithmetic, timing, sequencing, and also data handling.

 

The structure of a PLC:

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Steps of PLC Operations:

  • Input scan: In this, the state of all input devices that are connected to the PLC is detected.
  • Program scan: This step executes the user-created program logic.
  • Output scan: This step energizes or de-energizes all output devices that are connected to the PLC.
  • Housekeeping: This step includes communications with programming terminals, internal diagnostics, etc.

 

Advantages of a PLC control system:

  • It is flexible.
  • It has a faster response time.
  • It is easy to repair and expand the modular design.​

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