TSXBLZL01
TSXBLZL01TSXBLZL01
3.2用于模擬量控制
模擬量，如電流、電壓、溫度、壓力等等，它的大小是連續(xù)變化的。工業(yè)生產，特別是連續(xù)型生產過程，常要對這些物理量進行控制。
作為一種工業(yè)控制電子裝置，PLC若不能對這些量進行控制，那是一大不足。為此，各PLC廠家都在這方面進行大量的開發(fā)。目前，不僅大型、中型機可以進行模擬量控制，就是小型機，也能進行這樣的控制。
PLC進行模擬量控制，要配置有模擬量與數(shù)字量相互轉換的A／D、D／A單元。它也是I/O單元，不過是特殊的I/O單元。
A/D單元是把外電路的模擬量，轉換成數(shù)字量，然后送入PLC。D/A單元，是把PLC的數(shù)字量轉換成模擬量，再送給外電路。
作為一種特殊的I/O單元，它仍具有I/O電路抗干擾、內外電路隔離，與輸入輸出繼電器（或內部繼電器，它也是PLC工作內存的一個區(qū)?？勺x寫）交換信息等等特點。
現(xiàn)貨，現(xiàn)貨，降降降，火火火，火火火……
現(xiàn)貨，現(xiàn)貨，降降降，火火火，火火火……
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◆ 企業(yè)名稱：廈門泰尼電氣有限公司
◆ 聯(lián)系人： 小廖（女士）
◆ 電話：0592-6539066
◆ 傳真：0592-6890859
◆ QQ:1490371370
誠信經(jīng)營，質量為首，服務至上，廈門泰尼小廖竭誠為您服務?。?！
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