1756-L63/B+++1756-L63/B
1756-L63/B+++1756-L63/B
•采用絕對(duì)位置控制指令(DRVA),大致闡述FX1S控制步進(jìn)電機(jī)的方法。由于水平有限,本實(shí)例采用非專業(yè)述語(yǔ)論述,請(qǐng)勿引用。
•FX系列PLC單元能同時(shí)輸出兩組100KHZ脈沖,是低成本控制伺服與步進(jìn)電機(jī)的較好選擇!
•LS+,PLS-為步進(jìn)驅(qū)動(dòng)器的脈沖信號(hào)端子,DIR+,DIR-為步進(jìn)驅(qū)動(dòng)器的方向信號(hào)端子。
•所謂絕對(duì)位置控制(DRVA),就是指定要走到距離原點(diǎn)的位置,原點(diǎn)位置數(shù)據(jù)存放于32位寄存器D8140里。當(dāng)機(jī)械位于我們?cè)O(shè)定的原點(diǎn)位置時(shí)用程序把D8140的值清零,也就確定了原點(diǎn)的位置。
•實(shí)例動(dòng)作方式:X0閉合動(dòng)作到A點(diǎn)停止,X1閉合動(dòng)作到B點(diǎn)停止,接線圖與動(dòng)作位置示例如左圖(距離用脈沖數(shù)表示)。
•程序如下圖:(此程序只為說(shuō)明用,實(shí)用需改善。)
•說(shuō)明:
•在原點(diǎn)時(shí)將D8140的值清零(本程序中沒(méi)有做此功能)
•32位寄存器D8140是存放Y0的輸出脈沖數(shù),正轉(zhuǎn)時(shí)增加,反轉(zhuǎn)時(shí)減少。當(dāng)正轉(zhuǎn)動(dòng)作到A點(diǎn)時(shí),D8140的值是3000。此時(shí)閉合X1,機(jī)械反轉(zhuǎn)動(dòng)作到B點(diǎn),也就是-3000的位置。D8140的值就是-3000。
•當(dāng)機(jī)械從A點(diǎn)向B點(diǎn)動(dòng)作過(guò)程中,X1斷開(kāi)(如在C點(diǎn)斷開(kāi))則D8140的值就是200,此時(shí)再閉合X0,機(jī)械正轉(zhuǎn)動(dòng)作到A點(diǎn)停止。
•當(dāng)機(jī)械停在A點(diǎn)時(shí),再閉合X0,因?yàn)闄C(jī)械已經(jīng)在距離原點(diǎn)3000的位置上,故而機(jī)械沒(méi)有動(dòng)作!
~~~~~~~~~~~~~~~~~~~~~~~~~~~~
公司 名稱:廈門泰尼電氣有限公司
固定 電話:0592-6809819
聯(lián) 系 人:張亮
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