Please describe how PLC works?

Plc receives the input signal from push buttons, switches , sensors , and feed it to the central processor cpu

 

plc receive signal from sensor or switch such as temperature sensor ,light sensor, limit switch ,...then program upon request .at last, control motor or valve by output Q

 

The PLC is a device that receives the input signal from a switch or sensor via the CPU controller to control a system or motor.

 

PLC works by scanning the states on the output and input. When there is a change in the input, the output will change accordingly.

 

The PLC receives the signal through the knobs of equipment such as variable and analog equipment and sends the information to the central processor to control the device.

 

Plc operates on input signals and internally programmed programs. To output signals to control the devices

 

PLC is a device that receives signals from inputs such as analogue, digital and some external devices such as push button to transmit information about CPU to easily operate.

 

The PLC receives the input signal from push buttons, switches, then sends that signal to the central processor CPU and controls the output like a motor.

 

The PLC receives information from connected sensors and input devices, processes the data, and activates the output based on previously programmed parameters.

 

Programmable Logic Controller. Unlike conventional controllers that only have a certain control algorithm, PLCs have the ability to change the control algorithm arbitrarily written by the user through a programming language and to be flexible in changing. change algorithm

 

PLC works to scan for states on output and input. When there is a change in the input, the output will change accordingly

 

The way PLC works is to receive input signals such as push button, sensor. After receiving the signal to the central processor. After the processing is complete, the output will be output to control equipment such as: Engine, lamp ...

 

The principle of operation of the PLC is to receive input signals which are bits and then analyze, recognize and issue commands and signals to the output.

 

the first plc signal from external device. Continue to put on cpu. after receiving the processing signal according to the preset program.

 

A signal from peripheral devices such as sensors, contacts, ... is put into the CPU input for processing after the processing is completed, the CPU will output and output to lateral controlled devices. out according to the program I have available

 

Programmable control devices allow flexible implementation of control algorithms via a programming language and controlled by the system.

 

PLC is stand for Programmable Logic Controllers. PLC include input, output and CPU. It's received the signals from the input, solving problem and make decision by the CPU, and give out the processed data though the output.

 

PLCs are replacement for relay boards, on and off devices. An installed PLC has a simple appearance. You have a CPU module and input / output devices, called I / O. I / O is part of the CPU or other modules. It works more simply than relay boards, on and off devices

 

When the device is turned ON or OFF status by an external control device. A programmable controller repeatedly repeats a user preset program and waits for the signals to appear on the inputs and outputs the output signals.

 

PLC receives input signals from push buttons, switches, sensors and sends that signal to pre-programmed central processor CPU and outputs signals to control the device.