麻豆一区区三三四区产品麻豆-麻豆影视国产TV在线观看-麻豆影视国产在线观看-麻豆影视在线-麻豆影视在线观看av-麻豆影院

請(qǐng)教各位:在三菱PLC控制伺服電機(jī)時(shí),有時(shí)需要原點(diǎn)回歸,但在原點(diǎn)回歸指令ZRN時(shí)卻沒(méi)有指定運(yùn)行方向,但是當(dāng)伺服處于原點(diǎn)的負(fù)方向時(shí),它應(yīng)該正轉(zhuǎn)回歸原點(diǎn);當(dāng)伺服處于原點(diǎn)的正方向時(shí),它應(yīng)該反轉(zhuǎn)回歸原點(diǎn).是否在運(yùn)行過(guò)程中伺服電機(jī)能判斷在啟動(dòng)時(shí)的初始位置在原點(diǎn)的正反方向?

請(qǐng)問(wèn)版主如果是控制步進(jìn)電機(jī) ，只用一個(gè)光電開關(guān)回原點(diǎn)怎么做
如圖
v\:* {behavior:url(#default#VML);}o\:* {behavior:url(#default#VML);}w\:* {behavior:url(#default#VML);}.shape {behavior:url(#default#VML);}   Normal  0    7.8 磅  0  2    false  false  false                                          MicrosoftInternetExplorer4   <!-- /* Font Definitions */ @font-face    {font-family:宋體;    panose-1:2 1 6 0 3 1 1 1 1 1;    mso-font-alt:SimSun;    mso-font-charset:134;    mso-generic-font-family:auto;    mso-font-pitch:variable;    mso-font-signature:3 135135232 16 0 262145 0;}@font-face    {font-family:"\@宋體";    panose-1:2 1 6 0 3 1 1 1 1 1;    mso-font-charset:134;    mso-generic-font-family:auto;    mso-font-pitch:variable;    mso-font-signature:3 135135232 16 0 262145 0;} /* Style Definitions */ p.MsoNormal, li.MsoNormal, div.MsoNormal    {mso-style-parent:"";    margin:0cm;    margin-bottom:.0001pt;    text-align:justify;    text-justify:inter-ideograph;    mso-pagination:none;    font-size:10.5pt;    mso-bidi-font-size:12.0pt;    font-family:"Times New Roman";    mso-fareast-font-family:宋體;    mso-font-kerning:1.0pt;} /* Page Definitions */ @page    {mso-page-border-surround-header:no;    mso-page-border-surround-footer:no;}@page Section1    {size:612.0pt 792.0pt;    margin:72.0pt 90.0pt 72.0pt 90.0pt;    mso-header-margin:36.0pt;    mso-footer-margin:36.0pt;    mso-paper-source:0;}div.Section1    {page:Section1;}--> /* Style Definitions */ table.MsoNormalTable    {mso-style-name:普通表格;    mso-tstyle-rowband-size:0;    mso-tstyle-colband-size:0;    mso-style-noshow:yes;    mso-style-parent:"";    mso-padding-alt:0cm 5.4pt 0cm 5.4pt;    mso-para-margin:0cm;    mso-para-margin-bottom:.0001pt;    mso-pagination:widow-orphan;    font-size:10.0pt;    font-family:"Times New Roman";    mso-fareast-font-family:"Times New Roman";    mso-ansi-language:#0400;    mso-fareast-language:#0400;    mso-bidi-language:#0400;}