深入研究了EPA应用系统原理，阐明了EPA设备描述文件在系统中的作用。在EPA组态软件中实现了基于DOM的设备描述文件解析，验证了EPA标准的可行性；对比分析了主流的解析技术，并为设备描述文件找出了最合适的解析技术，可以有效提高EPA组态软件的时空效率。
It studies the principle of EPA application system deeply and illustrates the function of Device Description File in the system; realize the application of the device description file in EPA configuration software through document object model interface, which validates the feasibility of the EPA System Architecture and communication Specification; analyses the central parsing technology and find the most appropriate parsing technology for device description file, which can enhance the efficiency on space and time effectively.
