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Development trend of PLC

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Who can talk about the development trend of PLC in detail and write an article? Thank you

at present, PLC has been widely used in iron and steel, petroleum, chemical industry, electric power, building materials, machinery manufacturing, automobile, light textile, transportation, environmental protection, culture and entertainment and other industries at home and abroad. The usage is mainly divided into the following categories:
1. Switching value logic control replaces the traditional relay circuit to realize logic control and sequence control, which can be used for the control of single equipment, It can also be used in multi machine group control and automatic assembly line. Such as injection molding machine, printing machine, stapling machine, modular machine tool, grinder, packaging production line, electroplating assembly line, etc
2. Industrial process control in the industrial production process, there are some continuously changing quantities (i.e. analog quantities) such as temperature, pressure, flow, liquid level and speed. PLC uses corresponding a /D and D /a conversion modules and various control algorithm programs to process analog quantities and complete closed-loop control. PID regulation is a regulation method used more in general closed-loop control system. It is widely used in metallurgy and chemical process control
3. Motion control PLC can be used to control circular motion or linear motion. Generally, special motion control modules are used, such as single axis or multi axis position control modules that can drive stepping motors or servo motors. They are widely used in various machinery, machine tools, robots, elevators and other occasions
4. Data processing PLC has the functions of mathematical operation (including matrix operation, function operation and logic operation), data transmission, data conversion, sorting, table lookup, bit operation and so on. It can complete data collection, analysis and processing. Data processing is generally used in some large-scale control systems such as papermaking, metallurgy and food industry
5. Communication and networking
PLC communication includes communication between PLC and communication between PLC and other intelligent devices. With the development of factory automation network, PLC now has communication interface, which is very convenient for communication

it can be seen that the development trend of PLC

the domestic PLC industry is in urgent need of high-tech talents to improve products. Although the current products are high enough in technology and complete in variety, they are not very reliable. If you write about Siemens and Omron, you can write about their advantages, domestic shortcomings and areas that need to be improved

the function will become more and more powerful and will gradually replace DCS.

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