Discussed the application and development of DCS -

DCS system includes three parts: the I/O parts of controller, the communication network and the man-machine interface. Is the development of the DCS system such as microelectronics, computer, communications, especially the industrial network of the rapid development of high and new technology and products, and industrial applications demand change and constantly move forward.

power plant DCS

due to the current application of DCS high degree of automation, high reliability, it almost all of the new large thermal power plants as the main control system. Most types of DCS of up to four functions, namely, MCS, SCS, BMS and DAS. Practice has proved that the four functions of DCS is to realize the modern large coal-fired power plant automatic control is the most basic is the most mature choice. With the rise of the technical level of the DCS, DCS system coverage will be more and more widely, almost all of the control system such as DCS will eventually merge PLC controller, to establish a unified operation platform, make the information more quickly, the configuration is more transparent, also reduced the variety of spare parts, unified management and maintenance.

modern DCS to process information and highly centralized and integrated application of management information ( Such as MIS and SIS system) And allows the user to optimize the factory or the enterprise production scheduling management, achieve more economic benefits, thus more solid its dominant position in the market.

field bus and remote I/O

in the 80 s there have been some intelligent field instruments. These smart meters can be carried out on the range and zero distance setting, with functions of self-diagnosis, multi-parameter measurement and the environmental impact of automatic compensation, etc. The emergence of intelligent instrument system requirements and the upper machine to realize digital communication. A standard system of digital communication link field instruments and the upper machine arises at the historic moment, the communication link is the fieldbus.

according to the United States on behalf of the society ( ISA) Define SP50 committee, field bus ( Fieldbus) Is mainly in the field of manufacturing/process automation equipment in the field of automation device or production/control between a serial, digital data communications link.

there are several main fieldbus standards are:

Profibus a German national standard, a French national standard FIP, ISP a interactive system standard, CANBus a control standards of the local area network (LAN), ISA the instrument society of America. Have formed the field bus in the world two big group, — ISP and WorldFTP.

standard unified and mature fieldbus products can save a lot of cables; Greatly improve the accuracy of the control signal transmission, real-time, quickness and reliability; With better interactivity and openness; Greatly reduce the control room area and make system simplification; Reduce the system design, installation, debugging and maintenance costs, reduce the workload, but also to fire control room and the safe operation of thermal power plants. Fieldbus is the direction for the future of DCS.

however, due to the current fieldbus standard is not unified, the product has not yet mature, it is impossible to conduct a comprehensive promotion and application, people does not satisfy the present many deficiencies of the traditional DCS system, the remote intelligence I/O as a transitional product, obtained the promotion and application.

remote intelligent I/O, as a kind of independent system consists of three parts: the intelligent front-end, and computer network communication bus adapter. Practice has proved that as the transition of DCS to fieldbus control system, intelligent remote I/O process has both DCS I/O devices and field intelligent instrument on the application of maturity and practicability, but also has a lot of advanced characteristics of fieldbus and superior performance, is worthy of popularization and application.

Shenzhen Coolmay Technology Co., Ltd. is dedicated to servicing our customers with a wide array of high-quality service and products.
With comprehensive knowledge on plc manufacturers,why not visit the highly recommended site Coolmay PLC to get a full appreciation of the best ?
Shenzhen Coolmay Technology Co., Ltd. can promise you that we never conceded on the quality standards of our products.
The global market is estimated to reach a value of almost plc controller price in the next decade. have a robust position in the programmable control systems market because of its proven high potency in plc controller price.