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hljhfplc
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樓主  發(fā)表于: 2013-03-22 19:41
各位朋友好！本人剛學(xué)PLC,有1個(gè)S7-200  CPU222  AC/DC/RLY的PLC，想請教一下，輸出側是接DC24V？還是交流220V？還是兩種均可，謝謝！htgryxgs@163.com
sanlihu
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1樓  發(fā)表于: 2013-03-26 21:31
S7-200  CPU222  AC/DC/RLY
AC是指CPU電源是交流220V

DC是說(shuō)CPU集成輸出有直流24V（可供接近開(kāi)關(guān)等用）
RLY是說(shuō)PLC輸出類(lèi)型是繼電器，對外提供開(kāi)關(guān)信號，只要保證同一組使用同一電源就行。
吉圓電氣 QQ751673698

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