Tightening machine visualization method and system based on RS485 serial port communication

Abstract

The invention discloses a tightening machine visualization method and system based on RS485 serial port communication. The tightening machine visualization method comprises the steps that heartbeat frames are sent to establish a communication channel with a main control terminal; a tightening data frame sent by the main control terminal is received, the tightening data frame is obtained by classifying tightening data to be displayed according to priorities and then framing the tightening data, and framing includes framing first-level data according to slave station shaft numbers of tighteningmachines to obtain a first frame structure, and framing is conducted according to the frame number, the frame number and the slave station axis number of the split second-level data to obtain a secondframe structure; and according to the priorities of the tightened data frames, different threads are adopted to perform frame decoding to complete visualization. Tightening data is classified and prioritized, slave station shaft numbers are packaged into data frames according to the number of slave stations corresponding to a tightening machine during framing, different response mechanisms are adopted during sending, and different threads are adopted during frame decoding, so that sources of the data frames can be distinguished, and the problem of multi-frame data blockage is avoided.

Description

technical field [0001] The invention relates to the technical field of serial communication, in particular to a visualization method and system for a tightening machine based on RS485 serial communication. Background technique [0002] The statements in this section merely provide background information related to the present invention and do not necessarily constitute prior art. [0003] Serial communication is an economical and effective transmission method in the field of industrial control. As a communication platform, RS485 has the advantages of economy, high noise suppression, high transmission rate, long transmission distance, and wide common mode range. Industrial PCs generally have There is a serial port, which can communicate with the lower system through RS485, but RS485 is a simplex communication, which can only receive or send at the same time. Generally, the response mechanism is used for data interaction, and the communication parties define the interactive co...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the above problems, the present invention proposes a tightening machine visualization method and system based on RS485 serial port communication, which classifies and prioritizes the tightening data, and encapsulates the axis number of the slave station according to the number of slave stations corresponding to the tightening machine when framing To the data frame, different response mechanisms are used when sending, and different threads are used to unframe the frame, that is, the source of the data frame can be distinguished, and the problem of multi-frame data congestion can be avoided.

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