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Profibus-DP slave station device on basis of FDGA (Field Programmable Gate Array)

A circuit and protocol conversion technology, applied in the field of Profibus-DP communication devices, can solve the problems of inability to intervene equipment of different manufacturers, inconvenient on-site application, poor user openness, etc., to achieve efficient data processing capabilities, wide versatility, good adaptability Effect

Inactive Publication Date: 2012-12-19
TIANJIN UNIVERSITY OF TECHNOLOGY
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0003] 1) They are all developed specifically for a certain device, integrated inside the device, and not universal
[0004] 2) It is impossible to intervene devices from different manufacturers into the same network
[0005] 3) The openness for users is poor, and it is difficult for users to carry out secondary development according to their own needs
[0006] 4) It needs a special power supply, which is not convenient for on-site application
[0007] The disadvantage of the existing Profibus-DP slave station is that it is impossible to configure different devices from different manufacturers into the same control network. The reason for this disadvantage is that the design of the protocol user layer is not comprehensive, and the hardware design only considers a certain device. , not universal

Method used

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  • Profibus-DP slave station device on basis of FDGA (Field Programmable Gate Array)
  • Profibus-DP slave station device on basis of FDGA (Field Programmable Gate Array)

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Embodiment Construction

[0024] Such as figure 1 As shown, the FPGA-based embedded general-purpose Prifibus-DP slave station device provided by the present invention is composed of a core unit, that is, a protocol conversion module and a peripheral support unit. The protocol conversion module includes interconnected FPGA chip and SPC3 chip; the peripheral support unit includes isolation protection circuit, bus communication circuit, power conversion circuit and external indication circuit.

[0025] FPGA is the control core and calculation core of the whole device. It not only needs to combine with SPC3 to carry out calculation and encapsulation of the written and written data, but also monitor the working status of the whole device and give instructions through the external indicating circuit.

[0026] The isolation protection circuit is responsible for protecting the circuit level, eliminating the transmission of on-site electromagnetic interference signals, and ensuring the stability and correctness...

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Abstract

The invention relates to an embedded universal Prifibus-DP slave station device on the basis of a FDGA (Field Programmable Gate Array), which comprises a core unit, i.e. a protocol conversion module and a peripheral unit, wherein the protocol conversion module is used for analyzing a message, processing data and completing data exchange; and the peripheral unit is used for carrying out communication exchange of the data packaged according to a Profibus format with a Profibus-DP network, eliminating the interference of slave station equipment to a bus signal, improving the signal quality, converting a 24V power supply in a bus standard into a 5V power supply and indicating the working state of a communication device. The device has wide universality; and when peripheral equipment meets the specification of an interface circuit in a communication interface device, the communication interface device can be interconnected with any peripheral equipment to exchange Profibus-DP data information.

Description

technical field [0001] The invention relates to the field of industrial field bus communication, in particular to design a Profibus-DP communication device with wide versatility and openness. Background technique [0002] Profibus-DP is an open field bus system, because of its advantages of high communication rate, reliable communication quality and simple networking, it has been widely used in various production fields. However, the DP slave devices currently in the market have the following problems: [0003] 1) They are all developed specifically for a certain device, integrated inside the device, and not universal. [0004] 2) Devices from different manufacturers cannot be connected to the same network. [0005] 3) The openness for users is poor, and it is difficult for users to carry out secondary development according to their own needs. [0006] 4) It requires a special power supply, which is not convenient for on-site application. [0007] The disadvantage of the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/40H04L29/06
Inventor 陈在平贾超倪建云邱振兴
Owner TIANJIN UNIVERSITY OF TECHNOLOGY
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