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