A system bus with Ethernet as industrial controller

Abstract

The invention relates to a system bus which utilizes the Ethernet as the industrial controller. The system bus consists of a backplane; at least one Ethernet exchanger is arranged on the backplane and the Ethernet exchanger is provided with a plurality of connecting port terminals; at least one integrated circuit board slot and at least one group of connection signal lines are arranged on every integrated circuit board slot. One group of connection signal lines of every integrated circuit board slot are electrically connected with a connecting port terminal of the Ethernet exchanger, wherein, the line of the integrated circuit board slot is arranged in accordance with the line of the Ethernet electric signal. The invention utilizes the Ethernet as the system bus of the industrial controller to replace the system bus in prior art; by the mature technology of the Ethernet and the characteristics of the Ethernet, the invention has the advantages of good stability, expansion capability of the integrated circuit board slot and support of hot swap.

Description

technical field [0001] The invention relates to a system bus (System Bus), in particular to a system bus using Ethernet as an industrial controller. Background technique [0002] At present, in the application field of backplane (backplane), most of them use a bus conforming to PCI, ISA, and PC-104 specifications as the system bus for internal signal transmission of the backplane. Please refer to FIG. 1, which is a known backplane. A schematic diagram of the signal configuration between the system bus and the board slot, a plurality of board slots 12 are arranged on the backplane, each board slot 12 can be inserted into a board module 120, and the board slot 12 is respectively arranged with three sets of connection signal lines including address signal lines, data signal lines and control signal lines for electrically connecting to the system bus 10 . [0003] The system structure of above-mentioned Fig. 1 has following shortcoming: [0004] 1. Poor system stability: Indus...

AI Technical Summary

Problems solved by technology

[0004] 1. Poor system stability: Industrial controllers are used in industrial sites with high noise interference. When the bandwidth requirements of traditional system buses are higher, it is easy to cause system instability in industrial sites with high noise interference;

[0005] 2. The expandability of the card slot is limited: each card slot is like a connector. As far as the signal is concerned, it is easy to cause signal interference, so the expandability of the board slot will be limited;

[0006] 3. Can’t be hot-swapped: the well-known board slot does not have the function of hot-swappable, because all system signals are transmitted on the board slot, when directly plugging the board slot, it will cause system failure. crash

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