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Agreement converting method and device between MODBUS/TCP industrial Ethernet and PROFIBUS-DP bus on-the-spot

A protocol conversion and field bus technology, applied in the direction of electrical components, transmission systems, etc., can solve problems not related to protocol conversion methods and devices, etc., to achieve the effect of improving flexibility and compatibility, and realizing organic combination

Inactive Publication Date: 2005-07-27
SHANGHAI UNIV
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Problems solved by technology

But in the published patent literature, there is no content related to the protocol conversion method and device between the MODBUS / TCP industrial Ethernet protocol and the PROFIBUS-DP field bus protocol

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  • Agreement converting method and device between MODBUS/TCP industrial Ethernet and PROFIBUS-DP bus on-the-spot
  • Agreement converting method and device between MODBUS/TCP industrial Ethernet and PROFIBUS-DP bus on-the-spot
  • Agreement converting method and device between MODBUS/TCP industrial Ethernet and PROFIBUS-DP bus on-the-spot

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Embodiment Construction

[0045] A preferred embodiment of the present invention is described below in conjunction with accompanying drawing:

[0046] see figure 1 , the protocol conversion method between MODBUS / TCP industrial Ethernet and PROFIBUS-DP field bus of the present embodiment is: adopt industrial Ethernet interface module 20 to realize MODBUS / TCP industrial Ethernet protocol, adopt PROFIBUS-DP master node communication adapter module 12 Realize the PROFIBUS-DP field bus protocol, establish a unified message model by the software in the microprocessor 7, and realize the protocol conversion between MODBUS / TCP industrial Ethernet and PROFIBUS-DP field bus.

[0047] see figure 2 , the above-mentioned unified message model is: the message that microprocessor 7 (CPU) receives from industrial Ethernet interface module 20 is divided into six kinds, identifies message type with different message identification (message ID):

[0048] ① The PROFIBUS-DP network configuration message contains configur...

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Abstract

The protocol switched method includes following steps: the interface module of industrial Ethernet is used to implement MODBUS / TCP, and the communication interface module of PROFIBUS-DP master station is used to implement the field bus protocol. The soft ware in MPU is used to build unified message model and implement the protocol conversion between the MODBUSFFCP industrial Ethernet and PROFIBUS-DP field bus. The protocol conversion device is built by using following method: the MPU is connected with the industrial Ethernet interface module, the communication module of PROFIBUS-DP master station and SRAM through internal bus; the MPU is connected with an EEPROM through serial peripheral interface.

Description

technical field [0001] The invention relates to a protocol conversion method and device between two industrial communication network protocols MODBUS / TCP industrial Ethernet and PROFIBUS-DP field bus. Background technique [0002] The field bus is the lowest communication network used in the manufacturing field, which realizes the two-way serial multi-node digital communication between the microcomputerized on-site measurement and control instruments or equipment. Its appearance has changed the point-to-point connection between the traditional field instrument device and the main control system, and greatly saved on-site layout cables; at the same time, due to the intelligentization of the field instrument device, some functions of the main control system have been directly transferred to the field instrument and device. The on-site control function is strengthened, the control is more direct and reliable, and the structure of the main control system is greatly simplified to...

Claims

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Application Information

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IPC IPC(8): H04L29/06
Inventor 费敏锐陈维刚丁磊
Owner SHANGHAI UNIV