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樓主  發(fā)表于: 2012-07-18 17:39
請教各位,要檢測氣動(dòng)閥的開(kāi)和關(guān)的位置,就是那種氣動(dòng)頭上有二個(gè)微動(dòng)開(kāi)關(guān)用來(lái)檢測氣動(dòng)閥開(kāi)到位關(guān)到位的。由于比較多的氣動(dòng)閥,如果用PLC的輸入點(diǎn)來(lái)測的話(huà),一個(gè)閥就要二個(gè)輸入點(diǎn)至少要幾百點(diǎn)吧,有點(diǎn)太浪費了。請問(wèn)有沒(méi)有比較便宜的辦法來(lái)檢測,但又要讓觸摸屏上顯示出那個(gè)閥未開(kāi)關(guān)到位的。

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