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EPA industrial Ethernet and HART field bus interconnection method

A fieldbus and Ethernet technology, applied in the field of interconnection communication, can solve problems such as unfavorable promotion and application, and achieve the effect of saving cables, reducing hardware costs, and improving interoperability

Active Publication Date: 2011-01-26
SHANGHAI AUTOMATION INSTRAION CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the EPA industrial Ethernet standard formulated by our country can be extended to the field device layer and can independently form a complete industrial control network, if it cannot be compatible with other international mainstream fieldbus technologies, it will be extremely unfavorable for its promotion and application.

Method used

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  • EPA industrial Ethernet and HART field bus interconnection method
  • EPA industrial Ethernet and HART field bus interconnection method
  • EPA industrial Ethernet and HART field bus interconnection method

Examples

Experimental program
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Embodiment Construction

[0032] As shown in Figure 1, wherein, EPA Ethernet communication channel 1 and EPA protocol stack 2, are responsible for receiving the aperiodic message from EPA network, and submit it to EPA / HART protocol conversion module 3 to carry out the processing of next step, simultaneously Responsible for sending the message submitted by the EPA / HART protocol conversion module 3 to the EPA network as an EPA aperiodic message; at the same time responsible for receiving the periodic message from the EPA network, and assigning the control output to the corresponding HART current output channel, And the main variable of the relevant HART current input channel is sent to the EPA network through the EPA periodic message. In addition, EPA protocol stack 2 and EPA Ethernet communication channel 1 will also be responsible for the communication transaction processing specified by all other EPA protocols;

[0033] Among them, the EPA / HART protocol conversion module 3 is responsible for decoding ...

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Abstract

The invention discloses a method for realizing interconnection communication among industry ether networks based on EPA protocol and heterogeneous networks of on-site bus network based on HART protocol through an intelligent gateway. The intelligent gateway comprises an ARM microprocessor and a memorizer, an EPA ether network communication module, an HART module, a power circuit and an auxiliary circuit; the EPA ether network communication module and the HART module are respectively connected with the ARM microprocessor and the memorizer; the ARM microprocessor and the memorizer are used for storing software modules such as EPA protocol stack, the HART main-site protocol stack and the EPA / HART protocol converting module, etc.; the EPA protocol and the HART protocol are mutually converted and connected with each other through the EPA protocol stack, HAPT main-site protocol stack and the EPA / HART protocol converting module. The method of the invention ensures that the EPA control systemcan be completely compatible with the intelligent equipment of HART protocol and realizes the seamless connection of the EPA network and the HART bus on site.

Description

technical field [0001] The invention relates to the field of industrial Ethernet and field bus communication, in particular to a method for realizing interconnection and communication between heterogeneous networks of an industrial Ethernet network based on the EPA protocol and a field bus network based on the HART protocol through an intelligent gateway. Background technique [0002] The current mainstream of industrial control network technology is a variety of fieldbus and industrial Ethernet technology, because the fieldbus and industrial Ethernet international standards IEC61158 and IEC61784-2 are a situation where multiple communication protocols coexist, and will be used for a long time It is impossible to form a unified international standard, so solving the interconnection and communication problems between heterogeneous networks based on different fieldbus and industrial Ethernet protocols has become one of the key research directions in the field of automation. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L29/06H04L12/46H04L12/66
Inventor 包伟华张庆军
Owner SHANGHAI AUTOMATION INSTRAION CO LTD
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