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solomid
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樓主  發(fā)表于: 2018-01-07 14:48
剛入門(mén)學(xué)習歐姆龍plc，這個(gè)是別人寫(xiě)的程序，我拷貝過(guò)來(lái)研究，但是有些地方都不懂。比如圖上這段，定時(shí)器常閉接通，不就代表此時(shí)沒(méi)有報警，機器可以復位嗎，怎么這里會(huì )出現一個(gè)not指令？這個(gè)該怎么理解？ 附圖
照顧設備員
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1樓  發(fā)表于: 2018-01-19 08:59
學(xué)習了

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