Modbus-RTU协议的浮点数传输设计
Design of Floating Point Data Transmission Based on Modbus-RTU Protocal
刘宁宁 1殷华文 1郭壬戌2
作者信息
- 1. 南阳理工学院智能制造学院,河南南阳 473004
- 2. 河南中光学集团有限公司,河南南阳 473004
- 折叠
摘要
为解决Modbus-RTU通信协议中保持寄存器不能直接传递高精度浮点数的问题,设计了一种共用体数据结构,定义联合变量,将浮点数和对应的存储数组共享同一内存空间,发送端用浮点数二进制码的方式传输浮点数,接收端再用浮点数的格式读取这4个字节内的数值,实现Modbus-RTU协议的浮点数传输设计.该方法经多次数据传输测试,可同时发送多个不同精度的浮点数,数据传输简单、高效.该方法可应用于需要采用Modbus-RTU协议进行多个浮点数数据传输且精度不同的通信系统中.
Abstract
To solve the problem of holding registers not being able to directly transfer high-precision floating-point numbers in the Modbus-RTU communication protocol,a common body data structure is designed,which defines joint variables,shares floating-point numbers with corresponding storage arrays in the same memory space.The sender transmits floating-point numbers using floating-point binary code,and the receiver reads the values within these 4 bytes in floating-point format,achieving the floating-point number transmission design of the Modbus-RTU protocol.This method has undergone multiple data transmission tests and can simultaneously send multiple floating-point numbers with different accuracies,making data transmission simple and efficient.This method can be applied to communication systems that require the use of Modbus RTU protocol for multiple floating-point data transmission with different accuracies.
关键词
Modbus-RTU/温度PID/浮点数传输/共用体/IEEE754规范Key words
Modbus-RTU/temperature PID/floating point data transmission/common body data structure/IEEE 754 specification引用本文复制引用
出版年
2024
NETL
NSTL
万方数据