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ccong0831
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樓主  發(fā)表于: 2017-05-04 11:31
小弟初學(xué)S7200,目前遇到一個(gè)這樣的問(wèn)題,用cpu226里的PTO脈沖發(fā)生器控制步進(jìn)電機,Q0.0:輸出脈沖,Q0.2:脈沖方向。我打算用PTO里的子程序PTO1_RUN進(jìn)行自動(dòng)控制,自動(dòng)轉換開(kāi)關(guān)閉合后,步進(jìn)電機朝著(zhù)正方向按包絡(luò )里的輪廓走,走完輪廓之后,反方向單速回到原點(diǎn)。但正,反方向程序如何編寫(xiě)?
還有包絡(luò )中的相對位置,也沒(méi)標明方向是正還是負啊,正方向運動(dòng)完包絡(luò )后,選擇單速轉動(dòng),單速時(shí)的方向是朝正還是負,就是這個(gè)方向問(wèn)題如何確定,如何編寫(xiě),求高手指點(diǎn),最好有個(gè)例子可以看?

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