Configurable industrial bus interface supporting protocol

A technology of industrial bus and bus interface, applied in the design of bus interface, based on the field of RS485 physical layer bus in industrial field, can solve the problems of high cost, inconvenient flexible configuration, single function, etc., to achieve low cost, convenient field application, safety Good results

Inactive Publication Date: 2012-11-21
SHANGHAI HUAJIAN ELECTRICAL EQUIP
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Problems solved by technology

Most of the ProfiBus master nodes in the application are implemented by dedicated protocol chips, which are expensive, and the functions supported by the dedicated protocol chips are single, which is not easy to configure flexibly
In electric power and industrial control systems, multiple types of communication media and protocol standards coexist, resulting in diversification of communication types. The deeper the development of each type of technology, the compatibility between various types of equipment, the convenience of networking and use are proposed. new challenge

Method used

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  • Configurable industrial bus interface supporting protocol

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Embodiment Construction

[0010] Below in conjunction with accompanying drawing, the present invention is further described:

[0011] see attached figure 1 , the main control module 1 is implemented based on CPU control and runs according to the user's configuration configuration file. If it is configured as the ProfiBus master interface, the main control module 1 will convert the logic program and operating parameters of the ProfiBus master data link layer (FDL layer). Configured to the data link layer module 2; if configured as the ProfiBus slave interface, the main control module 1 configures the logic program and operating parameters of the ProfiBus slave data link layer (FDL layer) to the data link layer module 2; if If it is configured as the ModeBus master interface, the main control module 1 configures the logic program and operating parameters of the ModeBus master data link layer to the data link layer module 2; if it is configured as the ModeBus slave interface, the main control module 1 con...

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Abstract

The invention relates to a configurable industrial bus interface supporting protocols. A main control module is realized based on control of a CPU, the main control module operates according to a user configuration mode, and the main control module realizes application layer logic of protocol specifications. A data link layer module is realized based on FPGA which can be programmed to configure and operates in a hardware mode. The data link layer module can be flexibly configured to be a data link layer of a master station or slave stations with a ProfiBus specification, and also can be configured to be a data link layer of a master station or slave stations with a ModeBus specification. The industrial bus interface makes instruments be advantaged by good compatibility, high flexibility, low cost, fast speed, high automation degree, good security, and convenient field application.

Description

technical field [0001] The invention supports a protocol-configurable industrial bus interface, and relates to a bus interface design based on an industrial field RS485 physical layer bus, which can simultaneously support the ProfiBus specification and the ModeBus specification. It belongs to the field of communication in industrial control, especially involving the gateway node in the distributed control system, which exchanges data with the upper management system upward, and realizes data exchange with the distributed slave stations adopting the ProfiBus specification and the ModeBus specification downward. Background technique [0002] In the existing industrial field, the RS485 physical bus is very popular, and the ProfiBus specification and the ModeBus specification based on the RS485 bus are widely used. Most of the ProfiBus master nodes in the application are implemented with dedicated protocol chips, which are costly, and the functions supported by the dedicated pro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B19/418
CPCY02P90/02
Inventor 王晓辉刘巍峰张峰孙旭熹刘悦
Owner SHANGHAI HUAJIAN ELECTRICAL EQUIP
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