关键词: XML, 设备描述语言, 设备管理, 功能块, DOM解析

Abstract: The existing device description methods are not general but complex. Extensible Device Description Language (DDL) of XML-based was researched and Ethernet for Plant Automation (EPA) function blocks were applied in EPA device description language. According to the function block structure, the property of EPA equipments from different manufacturers was divided into several major categories, so the description of simulation function blocks could correspond with the description of equipment function blocks. This method was applied to the EPAConfiguration software. The comprehensive description of function block and device description was achieved, which can make the management and control of field devices easier.

Key words: XML, Device Description Language (DDL), device management, function block, DOM analysis