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讨论了基于ＨＡＲＴ协议的ＤＣＳ接口卡的硬件和软件设计，并阐明了它应用于ＤＣＳ的意义。本接口卡的实现将工厂自动化的基础网络从ＤＣＳ向下推到了现场一级；用户可以在ＤＣＳ上远程修改现场符合ＨＡＲＴ协议的智能仪表的量程、单位、阻尼值等这些原本要到现场才能调校的参数，并能向现场仪表下载／读取位号，建立了现场网络管理的雏形
The hardware and software design of DCS interface card based on HART protocol are discussed, and the significance of its application to DCS is expounded. The realization of this interface card will push down the factory automation base network from DCS to the field level; the user can remotely modify the range, unit, damping value and so on of the field intelligent instruments conforming to HART protocol on the DCS, School parameters, and to the field instrument to download / read the bit number, established a prototype of field network management