Advantages and disadvantages of programmable logic controller (PLC)

There are some advantages of programmable logic controller (PLC) are given below,

  • It has very faster scan time.
  • It has capable to communication with computer in plant.
  • It has great computational capabilities.
  • It has shorter training time required.
  • A wide range of control application.
  • It Have interfacing for inputs and outputs already inside the controller.
  • It is easily programmed and has an easily understood programming language.
  • It has project cost can be accurately calculated.
  • It has supervisory control capability.
  • It has small physical size.
  • It has flexibility in programming and reprogramming.
  • Troubleshooting is easier and faster.
  • It has high speed counters.
  • It has shorter project implementation time.
  • It has reliability in operation.

There are some disadvantages of programmable logic controller (PLC) are given below,

  • When a problem occurs, hold-up time is indefinite, usually long.
  • There are limitations of working of PLCs under high temperature, vibration conditions.
  • some PLCs turns on when power is restored and may cause any accident.
programmable logic controller

programmable logic controller

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