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廈門市泰尼電器有限公司
主營(yíng)產(chǎn)品： AB模塊PLC |
會(huì)員1.png)
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廈門市泰尼電器有限公司
主營(yíng)產(chǎn)品： AB模塊PLC |
| 參考價(jià) | 面議 |
聯(lián)系方式：張工查看聯(lián)系方式
更新時(shí)間：2018-05-18 20:31:59瀏覽次數(shù)：348
聯(lián)系我們時(shí)請(qǐng)說(shuō)明是環(huán)保在線上看到的信息，謝謝!
1786-RPFM===1786-RPFM
===
明白PLC控制的信號(hào)有那些
PLC是根據(jù)輸入條件來(lái)控制輸出信號(hào)的。輸入信號(hào)就是控制臺(tái)上的按鈕，機(jī)床上的限位開關(guān)，壓力繼電器和光電開關(guān)等各類傳感器，而輸出點(diǎn)則控制繼電器或接觸器線圈的通斷，指示燈的明滅，液壓閥電磁鐵的吸合及變頻器的信號(hào)端子的輸出。在做一個(gè)機(jī)床設(shè)計(jì)時(shí)我們經(jīng)常會(huì)碰到兩個(gè)問題，一個(gè)是PLC可擴(kuò)展的I/O點(diǎn)數(shù)是有限的，另一個(gè)是增加I/O點(diǎn)數(shù)是要增加成本的。所以我們要知道控制的信號(hào)有那些，各是多少，統(tǒng)計(jì)出需要多少輸入和輸出點(diǎn)，據(jù)此選出PLC。
：張亮（工程師） 專線：
24小時(shí)移動(dòng)專線： 【】
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