A.RTU網(wǎng)絡(luò)通訊故障 B.RTU供電電壓不穩(wěn) C.RTU正常運(yùn)行 D.以上都不對(duì)
A.網(wǎng)口通訊連接成功,網(wǎng)口無(wú)數(shù)據(jù)收發(fā) B.網(wǎng)口通訊連接未成功,網(wǎng)口無(wú)數(shù)據(jù)收發(fā) C.網(wǎng)口通訊連接成功,網(wǎng)口有數(shù)據(jù)收發(fā) D.網(wǎng)口通訊連接未成功,網(wǎng)口有數(shù)據(jù)收發(fā)
A.35mm B.50mm C.60mm D.40mm