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Real time synchronization network based on the standard Ethernet and its operating method

A real-time synchronization and Ethernet technology, applied in the direction of synchronization devices, digital transmission systems, electrical components, etc., can solve the problems of high cost of use and difficulty in ensuring accurate synchronization of the system, so as to reduce cumbersome work, facilitate system construction, and achieve consistency sexual effect

Inactive Publication Date: 2007-08-15
SHANDONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0018] The purpose of the present invention is to solve the problem that the real-time communication of existing network equipment and the precise synchronization of the system are difficult to guarantee when Ethernet is used in the field-level communication system, and the addition of special equipment will cause increased use costs, etc., providing A standard Ethernet-based real-time synchronization network and its working method with simple structure and low cost, which can realize real-time synchronization by using an existing common network card

Method used

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  • Real time synchronization network based on the standard Ethernet and its operating method
  • Real time synchronization network based on the standard Ethernet and its operating method

Examples

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Embodiment 1

[0049] Taking a master device and two slave devices as an example, the serial topology of the system is shown in Figure 1.

[0050] The communication between the master device 1 and the slave device 2 is completed by the data transmission line 3 and the data reception line 4 respectively, and the communication between the slave devices 2 is also completed by the data transmission line 3 and the data reception line 4, thus realizing Full-duplex communication of data between devices. The slave device has the functions of store and forward and direct forward. When the data sent by the master device 1 passes through the slave device 2, the slave device 2 receives it and directly forwards it to the next slave device 2. When the data from the slave device 2 is sent to the master device 1, if The slave device 2 has data to be sent to the master device 1, then the slave device 2 first stores the data of the next slave device 2, and after the data sent by the slave device 2 to the mast...

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Abstract

The disclosed real-time synchronous network based on standard Ethernet divides devices in network into the primary and slavery ones, provides a network topology for full-duplex communication in Ethernet, and presents method for primary device to automatic enumerate and configure slavery devices.

Description

Technical field: [0001] The present invention relates to a real-time synchronous communication network for industrial field-level communication, in particular to a real-time synchronous network based on standard Ethernet, which is used to solve communication problems in field-level communication systems, that is, how to solve the problem of using Ethernet for field-level Real-time communication and precise synchronization of the system are realized when the communication system is used. Background technique [0002] At present, in the field of factory automation and process automation, fieldbus is the mainstream solution in the field-level communication system. However, with the continuous progress and development of technology, the traditional fieldbus has shown its own limitations more and more. On the one hand, with the continuous improvement of the intelligence of field devices, the control becomes more and more decentralized, and the control data needs to be exchanged ...

Claims

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Application Information

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IPC IPC(8): H04L7/00H04L12/28
Inventor 张承瑞王金江
Owner SHANDONG UNIV
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