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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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  • Claims
  • Application Information

AI Technical Summary

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 modifying the kernel network to make it pass the protocol Stack will also increase system delay and jitter, so the data packets must be captured and processed before entering the kernel network protocol stack, otherwise the real-time performance of the system will not be guaranteed

Method used

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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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Embodiment Construction

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

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

[0036] A method for processing real-time Ethernet fieldbus network packets based on a network card, comprising the following steps:

[0037] 1) Determine the transmission path of the real-time Ethernet field bus data packet in the original networ...

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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...

Claims

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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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