Extensible plc intelligent data acquisition method

Abstract

The invention discloses an expandable PLC intelligent data collection method. The method includes: classifying the data types of the detection elements according to the data characteristics of the detection elements; establishing a sample data block according to the data type classification results and data characteristics of the detection elements; According to the grammatical characteristics of PLC, and the type and quantity of detection components connected to PLC, write component data blocks including multiple sub-data acquisition modules in the PLC; set the data acquisition algorithm according to the data structure of the sub-data acquisition modules in the component data block; Data acquisition needs to determine the start address and end address, based on the start address and end address, PLC uses data acquisition algorithm for data acquisition. The scalable PLC intelligent data acquisition method of the present invention can efficiently configure data acquisition channels according to the different amounts of data collected by different devices, efficiently classify and collect data according to different data types, and can be applicable to various industrial equipment to achieve good collection Effect.

Description

technical field [0001] The invention relates to the technical field of industrial equipment control, in particular to an expandable PLC intelligent data collection method. Background technique [0002] In order to make the industrial equipment control process more informatized and intelligent, the operating status and status data of industrial equipment are detected and collected through programmable logic controllers (Programmable Logic Controller, PLC) and various testing instruments, based on the collected Each state data controls the positioning, opening and closing, pressure protection and safety protection of industrial equipment. Existing detection instruments for industrial equipment mainly include detection components such as ammeters, voltmeters, pressure gauges, sensors, and encoders. When in use, the detection components are connected to the parts to be detected of the industrial equipment and the PLC respectively, and the detection components have a positive eff...

AI Technical Summary

Problems solved by technology

[0003] The existing connection mode between detection components and PLC is point-to-point mode. When in use, PLC needs to carry out independent programming and collection for each detection component, which has poor reusability and practicability, and low data collection efficiency.

Moreover, when the detection element needs to be replaced or the position of the channel where the detection element is connected to the PLC changes, the data program at the bottom of the PLC needs to be modified to ensure that the detection element is compatible with the PLC, which will seriously affect the operation stability and production of the corresponding industrial equipment. efficiency

Images