深入研究了EPA應(yīng)用系統(tǒng)原理，闡明了EPA設(shè)備描述文件在系統(tǒng)中的作用。在EPA組態(tài)軟件中實(shí)現(xiàn)了基于DOM的設(shè)備描述文件解析，驗(yàn)證了EPA標(biāo)準(zhǔn)的可行性；對比分析了主流的解析技術(shù)，并為設(shè)備描述文件找出了最合適的解析技術(shù)，可以有效提高EPA組態(tài)軟件的時(shí)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.