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修緣168
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樓主  發(fā)表于: 2015-04-21 20:27
PLC中晶體管和繼電器輸出，各有那些優(yōu)缺點(diǎn)？那種更具有優(yōu)勢？有人說(shuō)晶體管比繼電器好壞，是真的嗎？
卓發(fā)智能
相互學(xué)習，共同進(jìn)步。
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1樓  發(fā)表于: 2015-04-21 21:33
各有優(yōu)缺點(diǎn)，繼電輸出的不管直流還是交流都可以開(kāi)關(guān)控制，但不能脈沖控制，如步進(jìn)，伺服控制等就不行，晶體管只能控制直流而不能控制交流，但是晶體管可以發(fā)脈沖控制步進(jìn)伺服
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