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廈門市泰尼電器有限公司
主營產(chǎn)品： AB模塊PLC |
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廈門市泰尼電器有限公司
主營產(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 20:27:30瀏覽次數(shù)：168
聯(lián)系我們時(shí)請(qǐng)說明是環(huán)保在線上看到的信息，謝謝!
【IC697MDL254】【IC697MDL254】
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1．是否采用PLC
設(shè)計(jì)一個(gè)控制系統(tǒng)，首先應(yīng)該考慮的是：是否采用PLC。考慮的原則除控制功能外，主要是經(jīng)濟(jì)性和可靠性。如果被控制系統(tǒng)很簡單，I/O點(diǎn)數(shù)很少，或者I/O點(diǎn)數(shù)雖多、但控制不復(fù)雜，特別是各部分相互很少，那就沒有必要采用PLC。下列情況可考慮采用PLC：
1）I/O點(diǎn)數(shù)多，控制復(fù)雜。若用繼電器控制需大量的中間繼電器、時(shí)間繼電器、計(jì)數(shù)器等。
2）對(duì)可靠性要求特別高，用繼電器控制不能滿足。
3）生產(chǎn)需要經(jīng)常改變控制程序和修改控制參數(shù)。
4）可以用一臺(tái)PLC控制多臺(tái)設(shè)備。
：張亮（工程師） 專線：
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