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PLC control system: Programmable Logic Controller (PLC), which uses a type of programmable memory to store programs internally, execute user-oriented instructions such as logical operations, sequence control, timing, counting and arithmetic operations, and pass digital or analog input/output to control various types of machinery or production processes.
The role of the PLC control system:
(1) PLC replaces a large number of intermediate relays, time relays, counters, and other devices in the relay control system with software functions, which greatly reduces the design, installation, and wiring workload of the control cabinet.
(2) When PLC or external input devices and actuators fail, the cause of the failure can be quickly found according to the information provided by the light-emitting diode on the PLC or the programmer, and the failure can be quickly eliminated by replacing the module.
(3) It has strong anti-interference ability, and the mean time between failures reaches more than tens of thousands of hours, which can be directly used in industrial production sites with strong interference.
