Data acquisition method, system and device based on Modbus protocol and medium

Abstract

The invention relates to a data acquisition method, system and device based on a Modbus protocol and a medium, and the method comprises the steps: inputting a point location table, setting a plurality of point locations in the point location table, and enabling each point location to correspond to one piece of equipment data needing to be acquired; presetting the polling frequency of the point location according to a first data type of the equipment data, wherein the first data type is preset according to a polling time demand of the equipment data; according to a second data type of the device data, a specified address interval corresponding to the second data type is determined, and the second data type is preset according to service content represented by the device data; determining the address of the point location corresponding to the equipment data in the determined specified address interval according to the physical space of the equipment to which the equipment data belongs; generating a scheduling point location table corresponding to the point location table according to the polling frequency and the address of the point location; and performing polling collection on the equipment according to the scheduling point location table to obtain the equipment data.

Description

technical field [0001] The present invention relates to the technical field of data acquisition, and more specifically, to a data acquisition method, system, device and medium based on the Modbus protocol. Background technique [0002] At present, in the process of promoting the digital upgrading of industrial manufacturing and implementing intelligent manufacturing, one of the key issues is how to connect a large number of devices distributed on the production line to the The data generated in the process, data mining and analysis of these data on the platform, integration with the production process, and reverse control of the equipment by issuing commands, so as to realize the transparency of the manufacturing process, enhance predictability, and Monitor and maintain it in real time. [0003] In the process of building machine networking, although more protocols for smart devices have been proposed and applied in some fields, for a large number of industrial enterprises,...

AI Technical Summary

Problems solved by technology

[0007] 1. Each interaction can only read the data of consecutive address bits;

[0008] 2. Points with discontinuous addresses need to be read through multiple communication interactions to collect point data;

[0009] 3. Points with different data types (Float, String, etc.) must be read separately

The premise of this method is that the addresses of each point are continuous, but in actual engineering applications, the addresses of points in the point table are often discontinuous, and in actual use, the points will continue to increase or deleted, which will further lead to discontinuous point addresses, so in actual use, it is impossible to read data by reading continuous address bits, but it becomes polling and reading point by point The way to obtain point data, so with the increase of point data, the real-time collection of equipment data has become a bottleneck

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