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Industrial Ethernet protocol analysisand field tester

A protocol analysis and tester technology, applied in data exchange network, data exchange through path configuration, digital transmission system, etc., can solve problems such as inability to analyze EPA network scheduling rules, inability to identify EPA, etc., to enhance the ability of continuous work. Effect

Inactive Publication Date: 2007-11-14
CHONGQING UNIV OF POSTS & TELECOMM
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a kind of industrial Ethernet, EPA network has its own characteristics, such as adding EPA communication scheduling management entity in the link layer, defining its own user layer, etc. Analysis and on-site debugging tools have problems such as not being able to analyze the scheduling rules of the EPA network, and not being able to identify various service messages defined by the EPA protocol. Therefore, it is necessary to develop a portable network analysis and on-site commissioning instrument for the EPA network.

Method used

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  • Industrial Ethernet protocol analysisand field tester
  • Industrial Ethernet protocol analysisand field tester
  • Industrial Ethernet protocol analysisand field tester

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Embodiment Construction

[0014] The technical scheme of the present invention is described in detail below with reference to the accompanying drawings and specific examples:

[0015] Fig. 1 shows the principle block diagram of the system structure of the present invention. This portable protocol analysis and tester uses a single-chip microprocessor as the central control processor, and the core part can use a microprocessor chip S3C2410 (ARM9) specially used for portable equipment development. The central control processor is used as a background control processing module , and specifically includes the power management part, the network analysis part, the field test and fault detection part, and the EPA protocol conformance test part. In terms of memory, 16M Flash and 64M RAM are used in order to have enough space to run the program. For the convenience of debugging and the quickness of programming code, this portable instrument is also designed with a 100M Ethernet interface and control circuit, RS...

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Abstract

Aiming at disadvantages of current on site testing instrument for industrial control network, the invention designs portable instrument of analyzing and on site testing industrial Ethernet protocol (IEP). The designed instrument possesses features: monitoring state of EPA network in real time; carrying out performance analysis based on message of equipment declaration on network; detecting whether network connection and equipment are connected to network correctly; determining route of target equipment (TE), querying information of TE, detecting port state of TE; testing whether the tested object realizes service declared by the object according to EPA standard; testing time Synch precision between tested equipment and main clock; based on EPA standard to carry out deterministic scheduling analysis for message captured from network; carrying out attribute test for objects in management information database etc. The invention can widely be applicable to analyze and on site testing IEP.

Description

technical field [0001] The invention relates to communication technology, computer technology and automatic control technology, in particular to an industrial Ethernet control technology. Background technique [0002] 65C / 357 / NP formed on the basis of the national standard - "Industrial Ethernet EPA (Ethernet for plant automation) system structure and communication standard for industrial measurement and control systems" (referred to as "EPA standard") will serve as the tenth Four types are included in the fieldbus international standard IEC 61158. At present, products based on EPA standards are increasingly being used in engineering practice, but the analysis of EPA network, on-site installation and commissioning of EPA network equipment, and the testing of EPA-related products are still in their infancy. There is no ready-made instrument for analyzing and testing EPA network and EPA-related products. [0003] With the promotion of EPA standards, more and more EPA-related...

Claims

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Application Information

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IPC IPC(8): H04L12/28H04L12/26H04L12/24
Inventor 王平陈良华康小军苗海涛黄源
Owner CHONGQING UNIV OF POSTS & TELECOMM
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