What is PLC?
PLC is the abbreviation of Programmable Logic Controller.
Programmable logic controller is a digital operation electronic system specially designed for application in industrial environment. It adopts a kind of programmable memory, which stores the instructions to perform logic operation, sequence control, timing, counting and arithmetic operation, and controls various types of mechanical equipment or production process through digital or analog input and output.
Features of PLC
1. High reliability
Because PLC mostly adopts single-chip microcomputer, it has high integration, coupled with corresponding protection circuits and self-diagnosis functions, which improves the reliability of the system.
2. Easy programming
The programming of PLC mostly adopts relay control ladder diagram and command statement, and its number is much less than that of microcomputer. In addition to medium and high-grade PLCs, there are only about 16 small PLCs in general. Because the ladder diagram is vivid and simple, it is easy to master and use. It can be programmed without computer professional knowledge.
3. Flexible configuration
Since the PLC adopts a building block structure, users can flexibly change the function and scale of the control system by simply combining them. Therefore, it can be applied to any control system.
4. Complete input / output function modules
One of the greatest advantages of PLC is that for different field signals (such as DC or AC, switching value, digital or analog value, voltage or current, etc.), there are corresponding templates, which can be directly connected with industrial field devices (such as buttons, switches, sensing current transmitters, motor starters or control valves, etc.) and connected with CPU motherboard through bus.
5. Easy installation
Compared with the computer system, the installation of PLC does not require either a special computer room or strict shielding measures. When in use, it can work normally only by correctly connecting the detection device with the I / O interface terminal of the actuator and PLC.
6. Fast running speed
Because the control of PLC is executed by program control, its reliability and running speed are unmatched by relay logic control. In recent years, the use of microprocessors, especially with the large number of single chip microcomputer, has greatly enhanced the ability of PLC, and made the difference between PLC and microcomputer control system smaller and smaller, especially high-grade PLC.
As you can see in the video, the mechanical, pneumatic and electrical combination, all working actions are controlled by PLC. Touch screen makes the operation convenient and easy. As GTMSMART Machine, we continuously develop our products with the latest technology and provide high efficiency plastic thermoforming machine that will satisfy our customers.
Post time: Apr-20-2022