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tzhihao6
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樓主  發(fā)表于: 2013-12-22 16:23
我用手搖脈沖器連接PLC用高速計數器C251怎么控制步進(jìn)電機正反轉,手搖脈沖發(fā)出的脈沖數就是Y0輸出的脈沖數,而且要控制步進(jìn)電機正反轉。最好有梯形圖
foshanye123
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1樓  發(fā)表于: 2013-12-23 00:25
這個(gè)是可以的,三菱的用《DRVIA ,絕對位置控制指令》他會(huì )自動(dòng)根據高速計數器的加減值得變化控制步進(jìn)電機的正反轉。
DRVA第一個(gè)參數是要發(fā)出的總脈沖數(即是高數計數器的當前絕對數值),第二個(gè)速度,第三個(gè)是脈沖發(fā)出端口,第四個(gè)是方向。假如手搖脈沖發(fā)生器發(fā)出脈沖數比當前值大,那么方向信號沒(méi)有輸出,步進(jìn)電機正轉,假如手搖脈沖發(fā)生器發(fā)出脈沖數比當前值小,那么方向信號有輸出,步進(jìn)電機反轉。在此系統中步進(jìn)電機只能用脈沖加方向。

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