Real-time Ethernet fieldbus network data packet processing method based on network card

A network data packet and field bus technology, applied in the field of network card-based real-time Ethernet field bus network data packet processing, can solve the problems of increasing system delay and jitter, system real-time performance cannot be guaranteed, etc., to reduce system delay, reduce The effect of data volume, delay reduction and jitter reduction

Pending Publication Date: 2022-05-17
SHENYANG GOLDING NC & INTELLIGENCE TECH CO LTD
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

When a standard network card is used for real-time Ethernet fieldbus data packet transmission, the network data packet will be discarded because it is not recognized by the network protocol stack after being transmitted to the kernel network protocol stack, such as modifyin

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  • Real-time Ethernet fieldbus network data packet processing method based on network card
  • Real-time Ethernet fieldbus network data packet processing method based on network card

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[0034] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0035] The invention is suitable for application in the field of numerical control systems, especially suitable for the application occasions where standard network cards are used to transmit real-time Ethernet fieldbus network data packets, and is particularly suitable for the application of standard network cards for transmission of real-time Ethernet fieldbus network data packets in medium and high-grade numerical control systems occasion. The specific embodiments of the method of the present invention will be further described in detail below with reference to the accompanying drawings.

[0036] The real-time Ethernet fieldbus network data packet processing method based on the network card includes the following steps:

[0037] 1) Determine the transmission path of the real-time Ethernet field bus data packet in the native network card driv...

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Abstract

The invention relates to a real-time Ethernet field bus network data packet processing method based on a network card, and relates to the technical field of numerical control, in particular to the technical field of real-time Ethernet field buses, and specifically relates to the real-time Ethernet field bus network data packet processing method based on the network card. The method comprises the following steps: firstly, analyzing a transmission path of a real-time Ethernet fieldbus data packet in a native network card driver, and establishing a capture point of the real-time Ethernet fieldbus data packet in the network card driver; then, analyzing the characteristics of the data packet at a capture point, and establishing a data packet capture method based on a native network card drive; and finally, according to the bus protocol type to which the data packet belongs, designing an analysis processing method of the data packet in the original network card driver.

Description

technical field [0001] The invention relates to the technical field of numerical control, in particular to the technical field of real-time Ethernet field bus, in particular to a network card-based real-time Ethernet field bus network data packet processing method. Background technique [0002] At present, the real-time Ethernet field bus in the numerical control system still uses the traditional communication board form to transmit network data packets. Different field buses (such as EtherCAT, SSB-III real-time Ethernet bus, etc.) correspond to different communication boards. Each fieldbus needs to develop a set of corresponding hardware boards, which makes the system bloated and unreusable. The alternative is to use standard network interface cards to transmit network data packets. When a standard network card is used for real-time Ethernet fieldbus data packet transmission, the network data packet will be discarded because it is not recognized by the network protocol stac...

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Application Information

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IPC IPC(8): H04L12/40H04L69/08H04L69/22
CPCH04L12/40013H04L12/40169H04L69/08H04L69/22H04L2012/4026H04L2012/40208
Inventor 李备备郑飂默王诗宇辛丽李伦兴姜志超
Owner SHENYANG GOLDING NC & INTELLIGENCE TECH CO LTD
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