摘要:基于Profibus 总线的中央空调控制系统，能够真正实现实时的“分散控制、集中管理”，从根本上克服传统中央空调控制系统的舒适度调节能力差，能源浪费严重，可靠性不高，通信控制实时性低等缺点，因此将会在楼宇自动化中得到更加广泛的应用。本文介绍了基于Profibus 总线的中央空调控制系统，重点对该系统的硬件及软件设计进行了分析。关键词现场总线Profibus 总线可编程序控制器控制系统Abstract The Profibus based centralized air conditioning control system is really capable to implement the target of real time“decentralized control，centralized management”，and overcome the vital disadvantages of conventional centralized air conditioning control system，e. g. ，vaste energy，poor regulating capability on comfortable，low reliability，and hard to meet the requirement of real time communication control. Thus，the Profibus based system will be applied more and more extensively in the area of building automation. The system is introduced in this paper，mainly the hardware and softwaredesign of the system are analyzed.Keywords Fieldbus Profibus Programmable logic controller Control system