基于双RS-485总线的多从机高效通讯协议的设计与实现  

Design and Implementation of Multi-Slave High-efficiency Communication Protocol Based on Dual RS-485 Bus

作　　者：赵磊 穆蔚伟 杜石雷[1] ZHAO Lei;MU Yuwei;DU Shilei(Zhonghuan Information College Tianjin University of Technology,Tianjin 300380)

机构地区：[1]天津理工大学中环信息学院,天津300380

出　　处：《软件》2021年第2期61-63,共3页Software

基　　金：天津市教委科研计划项目(2019KJ156)。

摘　　要：工业现场多从机通讯广泛的应用于各类现场通讯系统中,本文提出了基于双RS-485总线的多节点快速通讯的协议实现方法,通过双路RS-485总线连接与主控器与多个节点间,在不影响正常的数据上传交互条件下,同时有效的提高了即时控制指令的下发与执行效率;该系统采用私有化精简通讯协议,以适应多节点、多功能的高效率通讯。Industrial field multi-slave communication is widely used in various field communication systems.This article proposes a protocol implementation method for multi-node fast communication based on dual RS-485 buses,which one is connected to the master through dual RS-485 buses with multiple nodes,without affecting normal data upload interaction conditions,while effectively improving the issuance and execution efficiency of real-time control instructions;the system adopts a privatized and streamlined communication protocol to adapt to multi-node,multi-functional high efficiency communication.

关 键 词：工业控制 数据采集 RS-485 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]