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wangsai0501
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樓主  發(fā)表于: 2010-06-12 10:20
請問(wèn)各位
1：模擬量的特里的位數是什么意思？
2：知道變頻器模擬特性（模擬電壓0+-10V，電流是0到20mA）用觸摸屏書(shū)輸入數字讓變頻器能從0——50Hz之間可調如何編程？
哪位有這方面的實(shí)例，加點(diǎn)注釋發(fā)出來(lái)分享下。要是能單獨編一個(gè)那更是萬(wàn)分感謝�。�！
zhenzai7
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1樓  發(fā)表于: 2010-06-13 16:14
像1樓所說(shuō)的一樣，如果就控制變頻的話(huà)可以用485模塊直接通迅了，直接編就行了這個(gè)最簡(jiǎn)單了。還有就是用模似量D/A 、A/D塊來(lái)轉換控制，這個(gè)就要硬件多一點(diǎn)。

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