摘要
EPA是我国工业自动化领域第一个拥有自主知识产权并被国际电工委员会(IEC)认可的国际标准。基于EPA标准构建的工业自动化控制系统是分布式网络控制系统,在同一控制系统,用户可能采用来自不同厂家的设备,这就导致了现场总线的互操作问题。针对现场总线的互操作问题,提出了采用XML进行EPA现场总线设备描述的解决方案,该方案可以解决现场总线设备描述语言的标准化以及组态软件和设备描述文件之间接口统一问题。定义了基于XML的EPA功能块接口,并在EPA组态软件中实现了基于DOM的设备描述文件解析。
EPA is the first international standard with our own intellectual property and has been certificated by IEC in automation in China. The industrial automatic control system based on EPA standard is a fieldbus control system. In the same control system, different customers might use various factories＇ devices. This would cause fieldbus＇ interoperability problem. The solution of the EPA fieldbus device description based on XML for fieldbus interoperability is proposed in this paper. This solution provides a standardized fieldbus device description language and uniform interface between configuration software and device description file. It defines the EPA function block interface based on XML and realizes the analysis of the device description file in EPA configuration software through document object model interfase.
出处
《计算机技术与发展》
2009年第2期213-216,共4页
Computer Technology and Development
基金
国家863计划项目(2004AA412020)
关键词
现场总线
设备描述
功能块
可扩展标识语言
fieldbus
device description
function block
extensible markup language
