Industrial field data collecting and analyzing system based on Modbus

Abstract

The invention relates to an industrial field data collecting and analyzing system based on a Modbus, and belongs to the technical field of Modbus data collecting and analyzing systems. According to the industrial field data collecting and analyzing system based on the Modbus, an embedded platform serves as a core, the embedded platform is connected with Modbus equipment such as an PLC, an HMI, an I/O and an intelligent instrument in an industrial production field and a network through serial links, related technological production parameters are inquired in a data collecting cycle set according to a certain time cycle, and the related technological production parameters are collected, stored and analyzed. Meanwhile, connection is established between the embedded platform and an upper computer through a TCP/IP, Modbus TCP real-time requests and technological parameter data file uploading requests are responded dynamically, and remote industrial field data inquiring, monitoring and informatization management are achieved.

Description

technical field [0001] The invention relates to a data acquisition and analysis system based on an industrial field bus and an analysis method thereof, in particular to a data acquisition and analysis system of a Modbus bus. Background technique [0002] Modbus is an application layer communication protocol located in the seventh layer of the open communication system interconnection reference model, which provides client / server communication between devices connected to different buses or networks, and is mainly used for TCP / IP and serial link transmission networks. At the same time, Modbus is also a request / response protocol, which provides corresponding services through function codes. [0003] Due to its open publication, compact frame format, support for multiple transmission networks, and easy development, the Modbus protocol has been widely used in the field of industrial automation production. [0004] However, Modbus devices and networks only support real-time read...

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Problems solved by technology

[0004] However, Modbus devices and networks only support real-time reading and writing of industrial field data, and cannot provide description, storage, and analysis of the data object itself, and cannot meet the information management of industrial production

[0005] At the same time, Modbus was developed for programmable controller communication in 1979 and does not support large data objects. As a result, most of the equipment in the industrial field only supports serial link communication, which cannot meet the needs of remote network monitoring and data information management.

[0006] In terms of patents, through the patent search platform of the State Intellectual Property Office, it was found that the relevant research on the Modbus protocol mainly focuses on the realization of the gateway from Modbus to other protocols and the analysis system for the Modbus frame itself. At present, no data objects for Modbus devices and networks have been found. New inventions and devices for the collection, storage and analysis of

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