Communication protocol applicable to reliable multi-machine communication, encoding and decoding method and communication device

Abstract

The invention discloses a communication protocol applicable to reliable multi-machine communication. The frame format of the communication protocol comprises a frame starting field, a frame header field, a load filed, a check field and an ending field, which are arranged in sequence from front to back, wherein the frame header field comprises a frame type field, a source address filed, a destination address filed, a load length filed and a functional codeword field, which are arranged in sequence from front to back; the load filed is expressed as a plurality of continuous data type fields according to the load contents to form a load structure model. According to the communication protocol, the frame header field comprises the source address filed and the destination address filed, thereby being applicable to multi-device communication. The load structure model is used for effectively improving the data framing and analysis efficiency. The frame header field comprises the frame type field, therefore classified analysis can be performed on the load data according to the frame type so as to effectively improve the readability and maintainability of the code.

Description

technical field [0001] The invention relates to a coding and decoding method related to protocol formulation in the field of communication and control, in particular to a communication protocol coding and decoding method suitable for multi-machine reliable communication. Background technique [0002] The communication protocol is an agreement that needs to be reached between communication devices. It makes uniform regulations on issues including data format, transmission speed, synchronization method, verification method, and function character definition, which must be followed in communication between devices. In actual communication applications, if there is a lack of a reasonable, strict and standardized communication protocol, the correctness of data transmission and the reliability of communication cannot be guaranteed. Generally, the transmitted data content is defined as bytes organized in the protocol frame, and arranged in sequence from front to back in the frame. ...

AI Technical Summary

Problems solved by technology

The traditional frame encoding format is simple and generally includes: start and stop marker bits, data length, function code, data, checksum and end flag bits, which are mostly suitable for communication between the upper computer and the lower computer, but cannot meet the communication needs between multiple devices

In addition, when decoding a traditional frame, only the function code is used to identify the frame function, and the frame content is not classified, which leads to poor code readability and is not conducive to code maintenance and upgrade

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