Apparatus and method for realizing synchronization between Ethernet chain-like network nodes

Abstract

The invention discloses a device and method to achieve synchronization between an ethernet chain network node. The invention solves the problems of high cost when achieving the precise synchronization between every network node in the Ethernet chain network structure without compatibility with products from different producers and increasing using cost. The invention takes advantages of simple structure, convenient operation and excellent compatibility. The structure of the invention is the following: it includes at least a controller and plurality of network node. The controller can enumerate and allocate every network node, and distributes a single nodal number to every network node. The controller contains at least a communication interface, and every node contains at least two communication interfaces. The interfaces of the controller is connected through a data line to the communication interface of a certain node, and then another communication interface of this node is connected through the date line to the communication interface of the next node. With this kind of connection, a chain network structure is formed; every node is provided with a timer.

Description

technical field [0001] The present invention relates to a method and a device for realizing precise synchronous actions among network nodes in an Ethernet chain network structure, in particular to a high-performance centralized control network system, where the controller adopts a standard network card to realize Ethernet A device and method for synchronizing between nodes of a mesh chain network. Background technique [0002] In field-level communication, some systems have strict requirements on the synchronization between communication nodes. For example, in motion control, the synchronization of each axis is a very important factor. At a certain moment, each axis must lock the current state at the same time. The controller performs planning and interpolation calculation according to the current state of each axis. In the next cycle, each axis performs synchronous control movement according to the planning data. The movement of each axis is strictly Synchronous. [0003]...

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to solve the problems of high cost, incompatibility with products from different manufacturers, and increased use costs in the current Ethernet chain network structure to achieve precise synchronization between network nodes, and to provide a method for realizing Ethernet chain network The device and method for synchronization between nodes has the advantages of simple structure and convenient use, and solves the problem that the synchronization between network nodes in the current Ethernet chain network structure depends on the main controller, which causes the control systems of various manufacturers to be closed and incompatible

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