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樓主  發(fā)表于: 2022-09-03 12:51
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1樓  發(fā)表于: 2022-09-04 11:47
引用
引用第4樓030403118于2022-09-04 10:50發(fā)表的  :
一墻的接觸器和繼電器實(shí)現了PLC功能
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剛參加工作,遇到一條80年代國產(chǎn)全模擬線(xiàn),數百點(diǎn),開(kāi)關(guān)點(diǎn)、溫度、壓力等指針儀表,PID調節器,執行器,柜子得有10米寬,柜前柜后雙面安裝,還有2個(gè)遠程站。圖紙A3據說(shuō)有1米那么厚,我一張也沒(méi)看到過(guò)。想想都發(fā)麻!據說(shuō)從調試完成交付后就沒(méi)有自動(dòng)正常運行過(guò)一天!我參加改造,單中控柜控制線(xiàn)都拆了3大籮筐。

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