D-BUS high-speed bus technology based on ring type Ethernet and auxiliary network

Abstract

The invention provides a D-BUS high-speed bus technology based on a ring type Ethernet and an auxiliary network, which belongs to the technical field of industrial control. The D-BUS high-speed bus technology is characterized in that a D-BUS (Dual-BUS) high-speed bus network consists of a high-speed ring type Ethernet ReBUS and an auxiliary network MB+, wherein the ReBUS bus utilizes the physical layer specification of Ethernet IEEE802.3, a main station is connected with slave stations in series to form a ring type topological structure, the wiring mode for the main station and the slave stations is same with that of the slave stations with the slave stations, a receiving terminal of each equipment is connected with a transmitting terminal of the former equipment, the transmitting terminal of the equipment is connected with a receiving end of a latter terminal, the receiving terminals are sequentially connected with the transmitting terminals in the mode to form a ring type network structure, I / O equipment are connected with the slave stations through RS485 serial ports and serve as the expansion I / O of the slave stations, and failure detection comprising failure diagnosis, failure location and communication redundancy is realized by the MB+ bus. The invention has the beneficial effects that the ring type wiring cost is low, the data exchange of all network nodes is realized by one message, the communication efficiency is high, a failure detection and failure recovery mechanism is provided, and the reliability is high.

Description

technical field [0001] The invention belongs to the field of industrial control technology, relates to the real-time and reliability requirements of data transmission in this field, and particularly relates to a D-BUS high-speed bus technology based on ring Ethernet and auxiliary network. Background technique [0002] The current commonly used Ethernet communication standards in the industrial field include: EtherNet / IP, Modbus / TCP, FF_HSE, ProfiNet, and EPA independently developed by my country. Each standard has different characteristics in terms of network protocol, communication rate, transmission distance, number of stations, and functional safety. Some of the above-mentioned bus networks use switches for network connection, and some use ring networks for connection. The ring network connection avoids problems such as switching delay and wiring complexity in the switching form. [0003] Industrial Ethernet fault detection usually adopts MRP protocol (Media Redundancy ...

AI Technical Summary

Problems solved by technology

Among them, the ReBUS bus is used for real-time data communication; the MB+ bus is used for fault diagnosis, fault location and auxiliary communication, etc., to solve the problems of high equipment cost, complex wiring, single function, or failure to realize fault location and communication redundancy in the field of industrial control technology. question

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