A large-scale plc high-speed backplane bus system based on pci-e interface

A high-speed backplane and bus system technology, applied in the direction of instrumentation, electrical digital data processing, etc., can solve the problems of many pins, signal frequency and signal transmission distance limitations, and achieve good real-time performance, convenient networking, and data distortion rate low effect

Active Publication Date: 2017-06-27
CENT SOUTH UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, due to the large number of pins in the traditional parallel transmission technology, it brings certain electrical and mechanical characteristics, which limits the signal frequency and signal transmission distance.

Method used

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  • A large-scale plc high-speed backplane bus system based on pci-e interface
  • A large-scale plc high-speed backplane bus system based on pci-e interface
  • A large-scale plc high-speed backplane bus system based on pci-e interface

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Embodiment Construction

[0043] attached figure 1 It is the topology of the PCI Express bus system. exist figure 1 In the system, all devices of the system are connected to the PCIExpress bus, including the CPU module (1), multiple endpoint devices (2) (3) (4) (5) (6). In this bus system, each device has a unique ID, and data exchange is based on the PCI Express bus. The root node connects the CPU (8), DDR (9) and Flash (10) to the PCI Express bus, can directly connect the endpoint device (2), and can also use a switch to expand the PCI Express bus link. The root node can start PCI Express transactions on behalf of the CPU (8) and access DDR (9) and Flash (10), and can receive endpoint devices (2) (3) (4) (5) (6) on the port to DDR (9) ) and Flash (10) access requests, and can complete transaction-to-transaction routing between different ports at the same time. The switch provides multiple ports for connecting end point devices (3)(4)(5)(6) and also provides an upstream port to the root node. Eac...

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Abstract

The invention discloses a large-scale PLC (programmable logic controller) high-speed backplane bus system on the basis of a PCI-E (peripheral component interconnect-express) interface. The large-scale PLC high-speed backplane bus system comprises a backplane bus, endpoint devices on the basis of the PCI-E interface and a CPU (central processing unit) module on the basis of the PCI-E interface. The CPU module on the basis of the PCI-E interface is a core device of the system. The large-scale PLC high-speed backplane bus system has the advantages that a method for designing the novel high-performance PCI Express bus is applied to the large-scale PLC high-speed backplane bus system, accordingly, the large-scale PLC high-speed backplane bus system is high in transmission rate, low in bit error rate, good in real-time performance and easy to install and maintain, and networking can be facilitated; large quantities of data can be transmitted by the backplane bus of a large-scale PLC system, the high-speed backplane bus system can be widely applied to industrial production monitoring procedures of the large-scale PLC system, and the like.

Description

technical field [0001] The invention belongs to the technical field of high-speed backplane bus, in particular to a large-scale PLC high-speed backplane bus system based on a PCI-E interface. Background technique [0002] With the rapid development and increasing popularity of electronic technology, computer technology, communication network control technology and industrial automation control technology, in the field of industrial control systems, the programmable logic controller (PLC), which was born in the 1960s, has become increasingly powerful. , has been developed from traditional stand-alone PLC control / network communication to networked large-scale PLC system, and the application requirements of large-scale PLC system with more than 10,000 points have appeared in the fields of rail transit, petrochemical and so on. [0003] The realization of the PLC backplane bus is a technical difficulty in the development of the PLC system in the direction of large-scale. PLC sy...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F13/38G06F13/40
CPCG06F13/28G06F13/4068G06F2213/0024
Inventor 徐德刚龙良曲赵茂行刘育峰谢攀攀周文俊阳春华桂卫华
Owner CENT SOUTH UNIV
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