The main application field for PLC

At home and abroad at present, the PLC has been widely used in steel, petroleum, chemical, electric power, building materials, machinery manufacturing, automobile, textile, transportation, environmental protection, cultural entertainment and other industries, main usage is divided into the following categories: 1. Switch to replace the traditional relay logic control circuit, realize logic control, sequence control, can be used for control of single equipment, also can be used for the fleet of more control and automatic assembly line. Such as injection molding machine, printing machine, stapler machinery, combined machine tool, grinding machine, packaging production line, plating production line, etc. 2. Industrial process control in industrial production process, there are some, such as temperature, pressure, flow, level and speed of continuous variation ( The analog) And PLC controller adopts corresponding A/D and D/A conversion module and A variety of control algorithm to process the analog program, complete the closed-loop control. PID control is generally be applied closed loop control system of a kind of adjusting method. The process control in metallurgy, chemical industry, heat treatment, boiler control and so on occasion has very wide application. 3. Motion control of PLC can be used in circular motion and linear motion control. Generally use the special motor control module, such as driving a stepper motor or servo motor of uniaxial or multi-axis position control module, widely used in all kinds of machinery, machine tools, robots, elevators, etc. 4. Data processing of PLC with math ( Including matrix operations, functions, operation and logic operation) , data transmission, data conversion, sorting, look-up table, bitwise operations, and other functions, can complete data collection, analysis and processing. Data processing is commonly used in some such as paper making, metallurgy, food industry of large control system. 5. Communication and network communication between the PLC communication with PLC and the communication between PLC and other smart devices. With the development of factory automation network, now of the PLC has a communication interface, communication is very convenient.
Whether it's automation or artificial intelligence, the rapid convergence of technology and business often determines plc manufacturers’s competitiveness.
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Many of the plc manufacturers listed here can be purchased for less money, but in general we recommend paying a slightly higher price for significantly improved performance. These are our top choices and their recommended configurations.
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