1747-L553
1747-L553
1747-L553
作為一種特殊的I/O單元，它仍具有I/O電路抗干擾、內(nèi)外電路隔離，與輸入輸出繼電器（或內(nèi)部繼電器，它也是PLC工作內(nèi)存的一個區(qū)?？勺x寫）交換信息等等特點。
這里的A/D中的A，多為電流，或電壓，也有為溫度。D/A中的A，多為電壓，或電流。電壓、電流變化范圍多為0～5V，0～10V，4～20mA。有的還可處理正負值的。
這里的D，小型機多為8位二進制數(shù)，中、大型多為12位二進制數(shù)。
A/D、D/A有單路，也有多路。多路占的輸入輸出繼電器多。
有了A/D、D/A單元，余下的處理都是數(shù)字量，這對有信息處理能力的PLC并不難。中、大型PLC處理能力更強，不僅可進行數(shù)字的加、減、乘、除，還可開方，插值，還可進行浮點運算。有的還有PID指令，可對偏差制量進行比例、微分、積分運算，進而產(chǎn)生相應的輸出。計算機能算的它幾乎都能算。
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
◆ ： 小廖（女士）
◆ ：
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◆ :
誠信經(jīng)營，質(zhì)量為首，服務*，廈門泰尼小廖竭誠為您服務?。?！
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