摘要
首先引入了虚拟现场设备的概念 ,接着对基金会现场总线虚拟现场设备的结构作了详细的分析 ,包括VFD模型的整体框架及其组成、网络可视对象、对象字典、AP目录等部分的具体说明 ,最后介绍了虚拟现场设备对象及其访问。
Firstly, the concept of virtual field device is introduced. Then the structures of virtual field devices based on foundation fieldbus are analyzed in detail. These include the concrete illustration of general frame and composition of VFD model, network visible object, object dictionary, AP content, etc. Finally the object of virtual field device and its access are presented. Key words Foundation fieldbus Virtual field device Applicable process Network visible object
出处
《自动化仪表》
CAS
北大核心
2003年第11期10-13,共4页
Process Automation Instrumentation
