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Protocol conversion device based on DeviceNet-Modbus

A protocol conversion and communication device technology, applied in the field of industrial automatic control and data communication, can solve the problem of not having DeviceNet slave communication, and achieve the effect of enhancing portability and facilitating debugging

Inactive Publication Date: 2012-10-03
TIANJIN UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In recent years, many devices in domestic industrial sites have RS-232, RS-485 or RS-422 serial communication hardware interfaces, and use self-defined simple communication protocols or Modbus protocols to realize communication functions, but most of them do not have Function to communicate as a DeviceNet slave

Method used

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  • Protocol conversion device based on DeviceNet-Modbus
  • Protocol conversion device based on DeviceNet-Modbus
  • Protocol conversion device based on DeviceNet-Modbus

Examples

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Embodiment Construction

[0034] Such as figure 1 The general structure diagram of the protocol conversion device based on DeviceNet-Modbus is shown, which includes:

[0035] DeviceNet interface circuit: for receiving and sending and analyzing and processing the data information of DeviceNet master station and protocol conversion module;

[0036] Modbus interface circuit: used to receive the Modbus command sent by the protocol conversion module, and send the Modbus device response message to the protocol conversion module;

[0037] Parameter setting circuit: used to set the communication baud rate and bus node number of the communication device, and reflect the working status and communication status of the communication device in real time;

[0038] The DeviceNet interface circuit part described therein includes:

[0039] Microprocessor: used to send Modbus commands to the Modbus interface circuit and respond to Modbus commands to the DeviceNet interface circuit, receive the data provided by the DIP...

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Abstract

The invention discloses a protocol conversion device based on a DeviceNet-Modbus, comprising a DeviceNet interface circuit for receiving, transmitting and analyzing DeviceNet data information converted by a DeviceNet master station and a microprocessor, a Modbus interface circuit for receiving a Modbus command transmitted by a protocol conversion module and transmitting the Modbus equipment response report to the microprocessor for protocol conversion, a parameter setting circuit for setting a communication Baud rate and a bus node number of the communication device and reflecting the working state and the communication state of the communication device in real time. With the hardware structure provided by the invention, the equipment provided with a Modbus interface can access to the DeviceNet network.

Description

technical field [0001] The invention belongs to the technical field of industrial automatic control and data communication, relates to a device for protocol conversion between two industrial communication protocols DeviceNet and Modbus, and is suitable for the application of Modbus equipment connected to the DeviceNet network. Background technique [0002] Fieldbus technology meets the intelligent and networked requirements of industrial control systems, and has attracted the attention of more and more fieldbus users and automation equipment manufacturers due to its openness, high efficiency and high reliability. Many companies And institutions have launched their own fieldbus protocols, and they all occupy a certain market share. However, each fieldbus is incompatible with each other, which brings a great negative impact on the popularization and application of fieldbus technology for users and manufacturers. [0003] In recent years, many organizations have tried to launc...

Claims

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Application Information

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IPC IPC(8): H04L29/06
Inventor 陈在平贾超
Owner TIANJIN UNIVERSITY OF TECHNOLOGY
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