德HIMA F7126
德HIMA F7126
德HIMA F7126
遠(yuǎn)程I/O部分選用A-B公司的1771遠(yuǎn)程I/O適配器。該適配器通過(guò)A-B公司的DH+數(shù)據(jù)總線與主處理器通訊,并刷新各輸入/輸出模塊的I/O點(diǎn)狀態(tài)。與遠(yuǎn)程I/O相連的現(xiàn)場(chǎng)設(shè)備,不僅包括各類(lèi)傳感器、執(zhí)行器,還包括一些分散在現(xiàn)場(chǎng)的本地控制器,例如儀表氣空壓縮機(jī)控制器、干氣壓透平壓縮機(jī)控制器,均為PLC5系列可編程控制器??紤]到設(shè)施保護(hù)系統(tǒng)對(duì)通信的高可靠性與實(shí)時(shí)性的要求,這些現(xiàn)場(chǎng)本地控制器不采用串行方式與設(shè)施保護(hù)系統(tǒng)通信,而使用0/24V開(kāi)關(guān)信號(hào)直接受設(shè)施保護(hù)系統(tǒng)的控制。
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