The application of PLC technology in industrial control and physical networking market prospects -

learn electronic knows, PLC is a very important component, is also relatively large a technical difficulty, it is specially designed for application in industrial environment and digital computing operations electronic system, is the realization of industrial automation and control, the basis of the Internet of things has a very broad application prospects in the future.

PLC technology in the field of industrial control and the Internet of things application characteristics and development trend of

PLC technology originated in the United States, American general motors, is the first to apply PLC in the 1960 s, they are in the factory production line adjustment, find the relay, contactor control system modification, large volume, large noise, inconvenient maintenance and poor reliability. Subsequently, the digital equipment company developed the first programmable controller, on the production line of general motors the effect of the trial. After the PLC technology in Japan, Europe, Japan, Germany and other developed programmable controller, 1974, our country began to research the programmable controller, and is widely used in major areas.

PLC replace mechanical switch device was first, then the function of PLC gradually replaced the relay control board, modern PLC has more functions, its usage from a single process control extends to the whole manufacturing system control and monitoring.

PLC technology in the application in the field of industrial automation, iot control

at present, the PLC technology is widely used in industrial automation, automotive electronics, transportation, Internet control, and other industries, its role in these fields can be roughly divided into four categories.

a, used to implement various motion control

PLC controller is a microprocessor digital electronic equipment, used for automatic control of digital logic controller, the control command at any time can be loaded in memory storage and implementation, from the inside by programmable controller CPU, instruction and data memory, input and output unit, power supply module, digital to analog unit into the modularization combination. PLC controller can be used in circular motion and linear motion control, now the main PLC controller products almost all have motion control function, it used in all kinds of machinery, machine tools, robots, elevators, etc.

2, realize the industrial process control

as industrial control computer, PLC controller can be all kinds of control algorithm program, complete the closed-loop control, in industrial process control, PLC is mainly to analog quantities such as temperature, pressure, flow and closed loop control parameters. Large and medium-sized PLC controller has PID module, PID regulation is be applied generally closed-loop control system of regulating method, at present many small PLC controller also has the function module.

three, implement relevant data processing

modern PLC controller has the function such as mathematics, data conversion, can complete data collection, analysis and processing; The data can be compared with reference values stored in the memory, accomplish a certain number of control operation, also can use communication function transferred to other intelligent devices. In a large control system, such as unmanned control of flexible manufacturing system, the PLC controller is one of the core parts.

4, PLC communication and the Internet of things

industrial iot the trend of The Times, the future of PLC communication and related technologies of Internet of things will be very popular. Usually the communication between the PLC controller communication with PLC controller and communication between the PLC controller and other smart devices. With the development of industrial control automation, PLC controller manufacturers have attached great importance to communication function of PLC controller, have launched their own network systems, a new PLC controller has the communication interface, communication is very convenient.

PLC technology in the field of industrial control and the Internet of things application characteristics and development trend of

the three major characteristics of PLC technology

1, miniaturization, integration, more and more high, along with the market demand for miniature, integration, PLC technology, more and more integrated into the industrial, automotive, communications, and other products. PLC control and data processing are the characteristics of products, in the meet function at the same time, the process requires more refined.

2, intelligent PLC technology: with the development of AI technology, more and more products are endowed with intelligent functions, PLC is no exception. As used in the PLC intelligent control in the I/O module and bus intelligent temperature control module, etc. , the future intelligent PLC technology will also have more application scenario.

3, diversification of PLC technology, including associated with PLC programming languages and tools, with the deepening of the application scenario, one or several programming language is unable to realize all the functions, customized PLC products will increase, PLC modular technology has also increased.

PLC technology in the field of industrial control and the Internet of things application characteristics and development trend of

China's huge market potential PLC

PLC technology is developing rapidly nowadays, according to statistics, more than three hundred PLC manufacturers around the world, more than five hundred kinds of PLC products, the United States, Europe, Japan is a major producer and market share of over sixty percent. The United States has A minus B company, general electric, modicon; Germany's Siemens, AEG; France TE company; Japan's mitsubishi, omron, panasonic, etc are all famous PLC supplier.

in recent years, with the national and enterprise value, the PLC industry keep high growth in China, the home also was born in, inovance, letter, one hundred million d, coldwell hollysys etc have certain influence to enterprises. According to relevant data show that in 2017 China PLC market size of ten billion yuan, is expected to maintain the growth rate of 20% in 2018. Domestic PLC products have very good price and service, this gave them a good reputation and market.

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