摘要
针对3种不同现场总线的工作特点,阐述了其通信性能。重点介绍了现场总线通信模型中的物理层和数据链路层。在此基础上,对3种总线技术的通信介质访问控制方式做了详细介绍,探讨了影响现场总线实时性的主要因素,说明了这是先进的控制技术。
For the characteristics of three fieldbus, the communication performance was discussed and the physical layer and data link layer of fieldbus communication model were introduced, Based on this, medium access control of these fieldbus was analyzed in detail. And the key factors which affect the real time of fieldbus was dis-cussed. It is an advanced control technology.
出处
《低压电器》
北大核心
2007年第11期25-27,48,共4页
Low Voltage Apparatus
