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bentlyKeyphasor模塊3500/25
bentlyKeyphasor模塊3500/25
bentlyKeyphasor模塊3500/25
沈陽皇姑熱電有限公司供暖監(jiān)控系統(tǒng)如圖1所示由三部分組成：現(xiàn)場換熱站HOLLiAS-PLC G5控制部分、GPRS數(shù)據(jù)傳輸部分、調(diào)度室數(shù)據(jù)中心。通過HOLLiAS-PLC G5 CP240 RS-232模塊完成與GPRS DTU的數(shù)據(jù)交互。PLC定時將數(shù)據(jù)發(fā)送給GPRS DTU，同時PLC實時接收DTU發(fā)來的數(shù)據(jù)完成相應控制功能。GPRS DTU在收到PLC發(fā)來的數(shù)據(jù)會立即轉發(fā)到數(shù)據(jù)中心。根據(jù)換熱站的實際情況，此次換熱站PLC每次向DTU發(fā)送幀格式數(shù)據(jù)量為140字節(jié)，包括所有模擬量和開關量。
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