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就怕不學(xué)aaa
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樓主  發(fā)表于: 2016-03-30 21:12
看PLC編程手冊高速計數指令時(shí)，看到脈沖指令大多寫(xiě)請使用晶體管輸出？使用脈沖指令一定要晶體管輸出？？？繼電器輸出不能使用脈沖指令？？？那只用編碼器測量，用脈沖指令控制，用PLC繼電器輸出型行不行呀？？？
huiyang
huiyang
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1樓  發(fā)表于: 2016-03-31 09:04
樓主好像對這些概念還沒(méi)搞清楚，繼電器是什么晶體管是什么？工作原理先搞清楚了。為什么要用晶體管？高速計數是對輸入而說(shuō)。脈沖是對輸出而說(shuō)。順便問(wèn)一下脈沖是什么？你原理明白了嗎？這些原理都明白了自然就懂了。
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