1756-L62S

對于非重要設(shè)備，可以通過硬件上多個觸點串聯(lián)后再接入PLC輸入端，或者通過PLC編程來減少I/O點數(shù)，節(jié)約資源。例如:我們使用一個按鈕來控制設(shè)備的啟動/停止，就可以采用二分頻來實現(xiàn)。
    模塊化編程思想的應(yīng)用:我們可以把正反自鎖互鎖轉(zhuǎn)程序封裝成為一個模塊，正反轉(zhuǎn)點動封裝成為一個模塊，在PLC程序中我們可以重復(fù)調(diào)用該模塊，不但減少編程量，而且減少內(nèi)存占用量,有利于大型PLC 程序的編制。
4 PLC控制系統(tǒng)程序的調(diào)試
    PLC控制系統(tǒng)程序的調(diào)試一般包括I/O端子測試和系統(tǒng)調(diào)試兩部分內(nèi)容，良好的調(diào)試步驟有利于加速總裝調(diào)試的過程。
4.1 I/O端子測試
    用手動開關(guān)暫時代替現(xiàn)場輸入信號，以手動方式逐一對PLC輸入端子進行檢查、驗證，PLC輸入端子的指示燈點亮，表示正常;反之，應(yīng)檢查接線或者是I/O點壞。
    我們可以編寫一個小程序，在輸出電源良好的情況下，檢查所有PLC輸出端子指示燈是否全亮。PLC輸入端子的指示燈點亮，表示正常。反之，應(yīng)檢查接線或者是I/O點壞。
火爆促銷中.全球熱賣
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3億庫存，下單后即可發(fā)貨公司名稱：廈門泰尼電氣有限公司

聯(lián)系人：小廖（銷售代表）

聯(lián)系電話：0592-6539066

傳真號碼：0592-6890859（麻煩備注01008收）

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誠信經(jīng)營，質(zhì)量為首，誠信至上，泰尼電氣小廖竭誠為您服務(wù)�。�！

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ABB INDUSTRY ACN6340605600000000902  OUT OF THE BOX*

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GENERAL ELECTRIC 44B331753-G222

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SECO AC FLUX VECTOR DRIVE SV3405-00000 5HP

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LOCHINVAR FTA120K WATER HEATER 120 GALLON 4500W

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ALLEN BRADLEY INPUT MODULE 1771-IBN SER. C DATE CODE: 09/02

THAYAR SCALE WITH MODULES