IC200ALG240 I/O接口是PLC與輸入/輸出設(shè)備連接的部件。輸入接口接受輸入設(shè)備(如按鈕、傳感器、觸點、行程開關(guān)等)的控制信號。輸出接口是將主機(jī)經(jīng)處理后的結(jié)果通過功放電路去驅(qū)動輸出設(shè)備(如接觸器、電磁閥、指示燈等)。I/O接口一般采用光電耦合電路,以減少電磁干擾,從而提高了可靠性。I/O點數(shù)即輸入/輸出端子數(shù)是PLC的一項主要技術(shù)指標(biāo),通常小型機(jī)有幾十個點,中型機(jī)有幾百個點,大型機(jī)將超過千點。
DCS與PLC系統(tǒng)備件優(yōu)質(zhì)供應(yīng)商
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