PLC-Smart industrial computer

                        PLC- Smart industrial computer 

Programmable logic controllers (PLCs) are digital computers used in industry and commerce. PLCs are used in many input devices and operate under defined programs.

It is considered an advanced form of conventional relay logic. This is because the PLC is "programmable" and its program can be changed according to the requirements of the application, thus avoiding the danger of wiring changes. Another feature is that PCs and smartphones can handle multiple programs, while PLCs are designed to perform single, predefined tasks.

Like a normal computer, a PLC also has a processor bus, I / O modules, programming units, and memory.
The processor is the core of the device. After processing the input, adjust the program and send the command to the output device. The processor executes functions such as logical operation, arithmetic operation, computer interface. The bus is the communication path to the PLC. Since the PLC is designed to operate on the basis of programmed logic, the bus sends data to the controller in binary format. This data is stored in memory along with the data to be processed. And the I / O module contains an interface that connects an input device such as a sensor and an output device such as a solenoid motor to the PLC.

There are several types of PLC, from modular to integrated. The PLC is also designed to work in extreme environments and can withstand high temperatures, vibrations, and high humidity. PLC solutions are generally cost-effective because the PLC controller has an input / output interface and can control complex systems.