RTU是REMOTE TERMINAL UNIT 的簡稱,既遠(yuǎn)方數(shù)據(jù)終端,用于監(jiān)視、控制與數(shù)據(jù)采集的應(yīng)用.具有遙測、遙信、遙調(diào)、遙控功能.計訊DTU (Data Transfer unit),是專門用于將串口數(shù)據(jù)轉(zhuǎn)換為IP數(shù)據(jù)或?qū)P數(shù)據(jù)轉(zhuǎn)換為串口數(shù)據(jù)通過無線通信網(wǎng)絡(luò)進(jìn)行傳送的無線終端設(shè)備.