The remote intelligence I/O and field bus technology

Abstract: the remote intelligence I/O and fieldbus technology information produced by excellent flow meter, flow meter manufacturer to offer you the quotation. With the rapid development of computer network, and promote the industrial automation control system structure of constant change, the traditional 4 ~ 20 ma analog signal system will be gradually replaced by two-way digital communication system of field bus, d/a type of DCS system will be updated for all. More flow meter manufacturers choose model price quote you are welcome to inquire, here is the remote intelligence I/O and the article details the fieldbus technology. With the rapid development of computer network, and promote the industrial automation control system structure of constant change, the traditional 4 ~ 20 ma analog signal system will be gradually replaced by two-way digital communication system of field bus, d/a type of DCS system will be updated for all type of fieldbus control system. A, remote intelligent I/O remote intelligent I/O application, make the process to get on the digital signal processing, thus greatly improve the control precision of the system, in addition, the anti-jamming ability and reliability and better environmental adaptability, these promoted the development of the fieldbus, accelerate the scene a component of the digital and intelligent process. Intelligent transmitter is the remote intelligence I/O a component with the infiltration and fusion results. The composition and working principle of the remote intelligence I/O the design of remote intelligent I/O using DCS and PLC network communication technology and field process control technology of the single loop controller, the purpose is to make the DCS system, realize the process I/O remote and intelligent. Remote intelligent general components: (I/O system 1) In the scene of the smart front end; （ 2) Communication bus; （ 3) Computer adapter. Intelligent front-end channel number generally have 15 ~ 20. Working principle of the remote intelligence I/O is: intelligent front-end machine after the signal acquisition and processing to the nearest, the results in digital communication way bus and the adapter to the computer via the network, comprehensive processing, is used to display, analysis and control; After the computer processing of data sent to the scene through the adapter and network bus control front machine, to the field device by way of front-end control machine at predetermined signal adjusting, realize data acquisition and control of industrial processes and equipment. The core of the remote intelligence I/O technology is a communication network and intelligent front-end. The characteristics of the intelligent I/O ( 1) Anti-interference ability and high control precision with intelligent remote I/O processing signal to the nearest, and through digital communication transmission of information, has strong anti-interference ability, processing precision was improved. Level 1 above, on-off resolution can be as high as the LMS. （ 2) Load decreases to expand and increase management functions of the host I/O front machine high intelligent degree, data processing ability, the management of all the I/O task can be completed by the adapter, greatly liberated the host, convenient for function extension and realize advanced control and management functions. （ 3) High reliability using isolation floating empty serial bus network structure, to avoid the more I/O, may cause the ground return of the land bring electromagnetic interference; Each front end and the network is isolated in the electrical, independent operation, any fault and danger are limited to local, greatly enhance the reliability. ( 4) Good open the remote intelligence I / 0 can easily change the adapter type, to meet all kinds of computer and the bus system. Especially the remote I / 0 system that has a variety of host network, it is easy to form various control monitoring system, integrated management information system and the entire network scheduling system, making it a scene with information real-time MIS system, the unified scheduling and optimization management and coordination control is of great significance. Second, fieldbus profibus is installed in the manufacturing or process area between field device and control indoor automatic control device of digital data bus, serial, multipoint communication. General fieldbus can use twisted pair, coaxial cable and optical fiber, the current use twisted pair or more shielded twisted-pair cable. The composition of fieldbus ( 1) The intelligent instrument ( Mainly refers to the intelligent transmitter) （ 2) Bus communication section ( 3) Fieldbus device types of fieldbus device types and basic device for the link control stations. Link control station digital message traffic control fieldbus, it allows each field device according to the system configuration of time scheduling to send data packets, data communication not only can make the device send single variable information, and can send more variable information.

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