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Method for converting protocol between Modbus and DeviceNet

A protocol conversion and protocol mapping technology, which is applied to electrical components, transmission systems, etc., can solve the problems of wasting network communication capabilities, reducing equipment information collection and control capabilities, etc.

Inactive Publication Date: 2010-01-06
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

Using the general I / O mode, the information can only be processed as I / O data. Since the amount of data is large but there is no real-time requirement, it will cause a huge waste of network communication capabilities; if it is not transmitted or selectively transmitted in a small amount data, it will reduce the ability of the system to collect and control the information of the equipment

Method used

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  • Method for converting protocol between Modbus and DeviceNet
  • Method for converting protocol between Modbus and DeviceNet
  • Method for converting protocol between Modbus and DeviceNet

Examples

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Embodiment Construction

[0032] A preferred example of the present invention is described in detail below in conjunction with accompanying drawing:

[0033] The protocol conversion method between Modbus and DeviceNet is to use the Modbus bus to connect with the microprocessor through the RS485 bus interface, and the DeviceNet bus to connect with the microprocessor through the CAN transceiver and controller, and the microprocessor is also connected to EEPROM and data and program memory. Construct the agreement conversion hardware platform, thereby adopt following Modbus and the agreement conversion model between DeviceNet (seefigure 1 ), realize the protocol conversion between Modbus and DeviceNet: the configuration file 1 is generated by the configuration port, and then the microprocessor program extracts the unit attribute 2 from the configuration file 1, on the one hand, the scan list 5 of the Modbus master station is generated, and on the other hand, the deviceNet’s Path configuration 3, the data de...

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Abstract

Through RS485 bus interface, Modbus bus is connected to microprocessor. Through CAN transceiver and controller, DeviceNet bus is connected to microprocessor. Microprocessor connected to EEPROM, data and program storage builds hardware platform of protocol conversion. Using model of protocol conversion between Modbus and DeviccNet supplied by the invention realizes protocol conversion between Modbus and DeviccNet. Modbus devices in form of DeviccNet object as slave site of DeviccNet is connected to DeviccNet network.

Description

technical field [0001] The invention relates to a method for implementing protocol conversion between two industrial communication protocols, Modbus and DeviceNet, and is especially suitable for the application of Modbus devices connected to the DeviceNet network, belonging to the field bus control technology field. Background technique [0002] In view of the fact that fieldbus standards are diversified, systems in practical applications often contain multiple bus networks. In order to realize the network information integration of different communication protocols, the development of communication adapters, or protocol converters, has become a major research content in the field of fieldbus control technology. [0003] The Modbus protocol was originally developed by Modicon, and it is now one of the most popular general industrial standard protocols in the world in the industrial field. my country promulgated the national standard GB / Z 19582.1-2004 "Industrial Automation ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L29/06
Inventor 费敏锐付敬奇王海宽陈维刚丁铁勇
Owner SHANGHAI UNIV
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