Method and apparatus for protocol switch between MODBUS/TCP industrial Ethernet and device network field bus

A protocol conversion and fieldbus technology, applied in the directions of network interconnection, data exchange network, data exchange through path configuration, etc., can solve the problems that are not involved in the protocol conversion method and device between industrial Ethernet and fieldbus, etc. achieve the effect of increasing flexibility and compatibility

Inactive Publication Date: 2004-03-17
SHANGHAI UNIV
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Problems solved by technology

However, in the published patent literature, there is no content related to the protocol conversion method and device between industrial Ethernet and field bus of different protocol standards

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  • Method and apparatus for protocol switch between MODBUS/TCP industrial Ethernet and device network field bus
  • Method and apparatus for protocol switch between MODBUS/TCP industrial Ethernet and device network field bus
  • Method and apparatus for protocol switch between MODBUS/TCP industrial Ethernet and device network field bus

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Embodiment Construction

[0045] A preferred embodiment of the present invention is described below in conjunction with accompanying drawing:

[0046] Referring to Fig. 1, the protocol conversion method between the MODBUS / TCP industrial Ethernet of the present embodiment and the device network field bus is: adopt the industrial Ethernet interface module 20 to realize the MODBUS / TCP industrial Ethernet protocol, adopt the device network master node communication adapter module 12 Realize the device network field bus protocol, establish a unified message model by the software in the microprocessor 7, and realize the application layer protocol conversion between MODBUS / TCP industrial Ethernet and device network field bus.

[0047] see figure 2 , the above-mentioned unified message model is: the message that microprocessor 7 (CPU) receives from industrial Ethernet interface module 20 is divided into six kinds, identifies message type with different message identification (message ID):

[0048] ①The device...

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Abstract

The invention discloses the method and apparatus for the protocol conversion between the MODBUS/TCP industrial Ethernet and the device network on site bus line, wherein an industrial Ethernet interface module is used for accomplishing the MODBUS/TCP industrial Ethernet protocol, a device network host node communication adapter module is used for realizing the device network on site bus line protocol, the software in the microprocessor is responsible for building-up a uniform message model, realizing the application layer protocol conversion between the MODBUS/TCP industrial Ethernet and the device network on site bus line.

Description

technical field [0001] The invention relates to conversion between two industrial communication network protocols, in particular to a protocol conversion method and device between MODBUS / TCP industrial Ethernet and equipment network field bus. Background technique [0002] Fieldbus is a system used in the production site to realize two-way serial multi-node digital communication between computerized measurement and control equipment. It is also known as an open, digital, and multi-point communication underlying control network. There are many kinds of fieldbus protocol standards. The International Electrotechnical Commission (IEC) announced and passed the IEC61158 fieldbus standard in 2000, which accommodates 8 mutually incompatible control layer protocols and three device-level fieldbus standards. The field bus has the advantages of good real-time performance and high stability, but the general communication rate is low. For example, the maximum communication rate of the de...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/24H04L12/28H04L12/46H04L29/06
Inventor 费敏锐陈维刚边宁宁
Owner SHANGHAI UNIV
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