Optimization and Application of EPA Device Description Based on XML

In order to enhance field devices interoperability in Ethernet Plant for Automation (EPA) network control system, the key of the research is focused on the characteristics of eXtensible Device Description Language (XDDL) and device description document based on XML. On this foundation, this paper puts forward a synthetic optimizing solution for device description document application from three aspects which include optimization methods of Extensible Markup Language (XML) parsing, buffer-memory display and secondary-parse storage structure. The test results prove that the processing rate of optimized EPA device description document triples over, which achieves an obvious effect.