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zgf889
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樓主  發(fā)表于: 2011-03-09 05:11
今天面試的一道題目：A電機運行4個(gè)小時(shí)，停10S后B電機運行4個(gè)小時(shí)，B電機運行四個(gè)小時(shí)后停10S，A電機運行！這樣間歇巡返運行！要求要用繼電器設計，我沒(méi)有做出來(lái)，心里很不平靜，求助各位給個(gè)答案
郭懷海
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1樓  發(fā)表于: 2011-03-12 23:20
用繼電器做，不如用PLC做來(lái)得簡(jiǎn)單。出這個(gè)題目的人只是在考查你的基礎，但應用并不經(jīng)濟
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