摘要
工控现场设备与总线相连,实现现场总线分布式控制离不开Profibus接口。介绍了Profibus现场总线的基本特征和智能从站通讯接口芯片SPC3,阐述了SPC3与AT89C52的接口设计和智能从站的软件设计。以SPC3芯片为核心开发的智能从站能很好地实现数据的采集和控制,在工控现场具有广泛的应用前景。
Profibus interface to connect field equipment with field bus in industrial control field and to realize distributed control. This paper introduces the basic characteristics of Profibus field bus and the communication interface chip of intelligent slave, and describes the interface design between SPC3 and AT89C52 and the software design of the intelligent slave. The intelligent slave based on SPC3 has the data acquisition and transfer function,and it has a broad application prospect in industrial control field.
出处
《现代电子技术》
2008年第3期149-150,共2页
Modern Electronics Technique
