本文将DDM 产品应用于三菱FX2N PLC 数据采集系统,介绍了DDM 产品配合PLC设计、硬件构成和软件编程方法,实现了10KV 配电数据采集和控制的设计方案。整个系统具有成本低、功能强、智能化等特点,现场运行效果良好! 关键词:DDM;PLC;现场总线 Abstract: This article applies DDM product to MITSUBISH FX2N PLC data collecting system, and introduces the design of DDM product and PLC , hardware circuit and software structure. The system realizes gathering and control of the 10KV Power distribution. The merit of the whole system is low cost,the function is strong and intel-ligent .The running effect is also satisfactory. Key words: DDM;PLC;Fieldbus