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Motion control bus communication method based on Ethernet physical layer

A technology of motion control and bus communication, applied in data exchange network, digital transmission system, electrical components, etc., can solve the problems of complex bus protocol and inconvenient use, achieve good real-time performance, high efficiency, and reduce the burden on the processor

Inactive Publication Date: 2013-09-04
HANGZHOU ZHENGJIA NC EQUIP
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Problems solved by technology

In recent years, international well-known large companies and industrial organizations have launched their own motion control bus standards based on the Ethernet physical layer. These bus protocols are relatively complicated, inconvenient to use, and need to purchase special chips to implement

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  • Motion control bus communication method based on Ethernet physical layer

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Embodiment Construction

[0023] The present invention will be further described below in conjunction with the drawings. In terms of hardware, the present invention is divided into two types: master station and slave station. A ring connection mode is used between the master station and the slave station, and the slave station and the slave station. Both the master station and the slave station have input and output interfaces. The output of the master station is connected to the input of the first slave station, and the output of the first slave station is connected to the input of the second slave station until the output of the last slave station is connected to the input of the master station. Network topology such as figure 1 Shown.

[0024] The specific implementation method of the present invention is:

[0025] (1) The data communication process is initiated by the master station. After the data frame is sent from the master station, it enters the first slave station.

[0026] (2) The slave station r...

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Abstract

The invention relates to a motion control bus communication method based on an Ethernet physical layer. The Ethernet is used as the motion control bus standard, and the Ethernet networking mode is realized on the basis of an annular structure. The output of a master station is connected with the input of a first slave station; the output of the first slave station is connected with the input of a second slave station until the output of the last slave station is connected to the input of the master station; the slave station receives a data frame; according to the its own address, data required to receive is extracted from the data frame; meanwhile, data required to send replaces the data required to receive and is placed onto the corresponding position in the data frame and is sent out; extraction and replacement are synchronously carried out; and each slave station carries out the same processing in sequence. According to the motion control bus communication method based on the Ethernet physical layer, which is disclosed by the invention, a communication means between a controller and a driver can be provided for the high-precision and high-speed motion control system, and the motion control of a multi-axis system is realized.

Description

technical field [0001] The invention belongs to the field of industrial automation, and in particular relates to a communication method for a motion control bus based on an Ethernet physical layer. Background technique [0002] With the continuous improvement of the processing technology requirements of the manufacturing industry, the motion control performance of core manufacturing tools such as CNC machine tools and industrial robots continues to improve. The traditional motion controller interface based on analog signals and pulse signals can no longer meet the needs of the new era. Compared with the motion control system based on analog signal and pulse signal, the motion control system based on motion control bus has the following advantages: [0003] (1) The hardware configuration is easy to modify. When the number of control axes and I / O points change, it has no effect on the hardware structure of the controller, which is convenient for expansion and reduction of the ...

Claims

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Application Information

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IPC IPC(8): H04L12/427
Inventor 陈洪铎
Owner HANGZHOU ZHENGJIA NC EQUIP
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