摘要
本文以RS-485总线在分散控制系统(DCS)中的应用为切入点,简要介绍了Modbus RTU协议的通讯模式、通讯规约,以及RS-485总线应用在现场控制站中的软硬件设计,探讨了DCS开放性设计的重要性和紧迫性。
This paper mainly describes the application of RS-485 bus in distributed control system （DCS） . We also give a brief introduction of communication mode and protocol ofModbus RTU, the soflware and hardware structure of DCS processing station with RS-485 bus. The importance and urgency of openness design in DCS are also emphasized in this paper.
出处
《自动化博览》
2012年第3期66-66,69-71,共4页
Automation Panorama1
关键词
开放性
分散控制系统
485总线
通讯
组态
Openness
Distributed Control System（DCS）： RS-485 bus
Commu nication：Configuration
