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How to choose between PLC and DCS?
PLC is an industrial computer used to control the manufacturing process, such as robot, high-speed packaging, bottling and motion control. In the past 20 years, PLC has added more functions and created more benefits for small factories and devices. PLC usually operates as a stand-alone system, bu...Read more -
Program structure and characteristics of several common PLC of Siemens
1. Program structure of some foreign small PLCs The user program of these PLCs consists of main program, subprogram and interrupt program. In each scan cycle, the CPU calls the main program once. The main program can call the subprogram, and the small control system can only have the main program...Read more -
DCS hardware architecture
Considering the hierarchical structure of DCS, the process control level and control management level are the two most basic links of DCS. The process control level realizes the decentralized control functions of signal input, transformation, operation and output. In different DCS, the control de...Read more -
Application of frequency converter in mineral processing production and anti-interference measures
1 Introduction The device that converts power frequency AC with fixed voltage and frequency into AC with variable voltage or frequency is called “frequency converter”. In recent years, with the development of the resource industry, the mineral processing industry has been expanded and...Read more -
Four basic principles of industrial Ethernet design
Industrial Ethernet technology has become one of the most popular communication networks because of its low price, stability and reliability, high communication rate, rich software and hardware products, wide application and mature support technology. In recent years, with the development of netw...Read more -
Yaskawa Robot Welding Program Editing Process
Welding robot program editing 1、 Create welding procedure [teaching of welding seam]. 1. Turn on the power switch on the control cabinet in the “ON” state. 2. Set the operation mode to “TEACH” → “Teaching mode” 1. Enter the program editing status: 1.1. First s...Read more -
Six coordinate systems commonly used by industrial robots
1. Base coordinate system The base coordinate system is based on the robot mounting base A rectangular coordinate system used to describe the motion of the robot body. Any robot cannot be separated from the basic coordinate system, which is also the basic coordinate system necessary for the robot...Read more -
Application of Oscilloscope in Industrial Robot
At present, industrial robots are widely used in other industries besides automobile industry and electrical and electronic industry The rapid development of robots has brought great impact on manufacturing enterprises. First, robots can improve production efficiency and product quality. The robo...Read more -
Four major trends in the development of DCS control system technology in the future
DCS system is a major automatic control system besides PLC. It is widely used in chemical industry, thermal power and other fields. However, the demand for automation technology in production has been further improved. The traditional DCS system can no longer meet the needs and needs to be upgrad...Read more -
ABB 800xA extends automation to help medical nutrition production
In 2005, Nutricia replaced the control system of production plants in Zoetermeer region of the Netherlands with the system 800xA – ABB’s “flagship” automatic control system for the process industry. Through close cooperation, all parties involved in this project finally realized...Read more -
Program structure and characteristics of several common PLC of Siemens
1. Program structure of some foreign small PLCs The user program of these PLCs consists of main program, subprogram and interrupt program. In each scan cycle, the CPU calls the main program once. The main program can call the subprogram, and the small control system can only have the main program...Read more -
How to solve the problem that the temperature controller and PLC cannot communicate?
The following two parts are mainly checked: ① Temperature controller side: A. Whether the communication wiring is correct. It is recommended to use shielded twisted pair for the communication line; Refer to the figure below for RS232 wiring: B. Check whether the communication writing in the adjus...Read more -
How to learn DCS control system
With the development of automation technology, the original PLC controller can no longer meet the requirements of some large projects. In this case, the DCS control system came into being. Dcs control system, also known as distributed control system, is a new type of computer control system relat...Read more -
Application of Rockwell PLC in the control system of ten-story elevator
Since American Otis Elevator Company launched the world’s first motor-driven elevator in 1889, the elevator has gone through the process of drum drive and traction drive in driving mode, and gradually formed two different driving modes of DC motor drive and AC motor drive. Nowadays, elevato...Read more -
ABB Freelance 800F distributed control system communication motor
The Freelance 800F system connects the process station, operator station and engineer station in the system through the system bus. The system bus fully complies with DIN/ISO 8802, Part 3 (IEEE802.3) Ethernet standard, and can use twisted pair, optical fiber or coaxial cable. The system bus can a...Read more -
Siemens Water Solutions
Water is the most important commodity, and it is also a resource that will be threatened (almost everywhere) because of overuse and environmental pollution. Therefore, the stable supply of economic and high-quality drinking water and the smooth progress of wastewater treatment should not be taken...Read more -
PCS7 based control system of three wastes boiler in chemical plant
PCS7 is a new generation of process control system based on modular field bus. It combines the advantages of traditional DCS and PLC control systems and organically combines the functions of both. Because PCS7 eliminates the boundary between DCS and PLC systems, it truly realizes the integration ...Read more -
Perfect integration of Siemens DCS and SIS
Integration requirements of DCS and SIS With the continuous development of China’s oil industry, safety in production and energy conservation and environmental protection are receiving increasing attention. Fushun Petrochemical’s “ten million tons of oil refining and one million...Read more -
Difference between PLC and SCM
PLC is the abbreviation of Programmable Logic Controller. It is a digital arithmetic controller with microprocessor for automatic control. It can load control instructions into memory at any time for storage and execution. PLC is a computer dedicated to industrial control. Its hardware structure ...Read more -
Why is PLC so flat?
With the continuous reduction of PLC price and the continuous expansion of user demand, more and more small and medium-sized equipment begin to use PLC for control, and the application of PLC in China is growing rapidly. With the rapid development of China’s economy and the continuous impro...Read more