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On-site intelligent unit supporting industrial communication protocol and operating method thereof

An intelligent unit and industrial communication technology, applied in the field of measurement and control instruments, can solve problems such as measurement and control instruments that do not involve industrial Ethernet and fieldbus

Inactive Publication Date: 2005-04-06
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the published patent literature, there is no content related to the measurement and control instruments supporting industrial Ethernet and fieldbus of different protocol standards.

Method used

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  • On-site intelligent unit supporting industrial communication protocol and operating method thereof
  • On-site intelligent unit supporting industrial communication protocol and operating method thereof
  • On-site intelligent unit supporting industrial communication protocol and operating method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0078] A preferred embodiment of the present invention is described below in conjunction with accompanying drawing:

[0079] Referring to Fig. 1, the field intelligent unit supporting the industrial communication network protocol includes a control unit and a communication interface module, and is characterized in that:

[0080] 1) The microprocessor (10) in the control unit is connected with the industrial Ethernet interface module (19) through the internal bus (17), and the industrial Ethernet interface module (19) is connected to the Ethernet ( 21), realize the MODBUS / TCP industrial Ethernet protocol;

[0081] Or, the microprocessor (10) in the control unit is connected with the DeviceNet slave station interface module by the internal bus (17), and the DeviceNet slave station interface module is connected to the fieldbus through its fieldbus interface to realize the DeviceNet fieldbus protocol;

[0082] Or, the microprocessor (10) in the control unit is connected to the Pr...

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PUM

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Abstract

This invention relates to a spot intelligent unit and its operation method supporting industry communication network agreement, which comprises control unit and communication port module. The communication port module realizes the MODBUS / TCP industry Ethernet agreement or DeviceNet spot bus agreement or Profibus-DP spot bus agreement. The control unit has a microprocessor connected with A / D converter, D / A converter through light couple device, wherein its switch input, output and A / D converter and D / A converter are connected with the control subject.

Description

technical field [0001] The invention relates to a measurement and control instrument supporting industrial communication network protocols and an operation method thereof, in particular to an on-site intelligent unit which can select three different communication interfaces including MODBUS / TCP industrial Ethernet, DeviceNet and Profibus-DP, and its method of operation. Background technique [0002] Fieldbus is a new control technology emerging in the field of automation. 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. In view of the unanimous optimism of fieldbus technology in the industry, major companies in the world have launched their own fieldbus protocols and corresponding software and hardware products, thus forming a variety of fieldbus protocol standards. ...

Claims

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Application Information

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IPC IPC(8): G06F13/42H04L12/24H04L29/02H04L29/06
Inventor 费敏锐谢志冰赵维琴
Owner SHANGHAI UNIV
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