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Industrial Ethernet system

An Ethernet and industrial technology, applied in the direction of transmission system, digital transmission system, data exchange network, etc., can solve the problems of low communication efficiency of industrial Ethernet, achieve the effect of saving network bandwidth and improving communication efficiency

Active Publication Date: 2015-07-08
EMERSON NETWORK POWER CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] An embodiment of the present invention provides an industrial Ethernet system to solve the problem of low communication efficiency of industrial Ethernet in the prior art

Method used

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Embodiment Construction

[0031] The technical solutions of the present invention will be described in detail below with reference to the drawings and specific embodiments.

[0032] First of all, if figure 2 Shown is a schematic structural diagram of an industrial Ethernet system in an embodiment of the present invention. The system includes a master station and a slave station, which are connected to form a ring network topology through the network port of the master station, the network port of the slave station, and a standard network cable. The master station The two network ports of the station are connected to the master station processor, and the slave station network ports in the slave station are connected to the slave station processor.

[0033] Among them, the master station processor sequentially sends service data packets carrying synchronization information to each slave station through the network port; when the slave station processor receives the service data packets sent by the maste...

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Abstract

The embodiment of the invention provides an industrial Ethernet system. Synchronization information is carried in the process of service data packet transmission between a master station and slave stations in the system, so that the master station does not need to transmit a specific synchronization frame to the slave stations to realize synchronization between the master station and the slave stations, instead, synchronization information is directly carried in a service data packet transmitted in daily communication. Therefore, the network bandwidth is saved, the problem that a normal service data packet cannot be transmitted when a synchronization frame is transmitted between the master station and the slave stations is avoided, and the communication efficiency of the system is enhanced.

Description

technical field [0001] The invention relates to the field of industrial automation, in particular to an industrial Ethernet system. Background technique [0002] At present, at least one master station and several slave stations are included in the industrial Ethernet system, and each slave station contains at least two network ports. Such as figure 1 shown), in the figure 1 The master station and N slave stations form a chain network, and then the master station sends command data packets to each slave station through the link. [0003] The synchronization process of the industrial Ethernet system in the prior art is completed through the synchronization frame, that is, the master station requests the synchronization clock information from the slave station by sending a separate synchronization frame, and the requested slave station sends the corresponding synchronization frame information to the master station. The response frame returns synchronous clock information. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/24H04L12/26
Inventor 周朝阳姚詹图胡永辉林应荃
Owner EMERSON NETWORK POWER CO LTD
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