點(diǎn)擊圖片查看大圖190E-AND2-DC10C-R現(xiàn)貨
隨著“制造2025”“互聯(lián)網(wǎng)+”“網(wǎng)絡(luò)強(qiáng)國(guó)”等戰(zhàn)略的深入實(shí)施，通信及自動(dòng)控制技術(shù)、傳
感技術(shù)等信息技術(shù)快速發(fā)展、不斷滲透應(yīng)用，“數(shù)字工廠”概念應(yīng)運(yùn)而生。
通信設(shè)備制造業(yè)迎轉(zhuǎn)型拐點(diǎn)
信息通信行業(yè)是國(guó)民經(jīng)濟(jì)基礎(chǔ)性、戰(zhàn)略性、先導(dǎo)性產(chǎn)業(yè)，對(duì)我國(guó)經(jīng)濟(jì)轉(zhuǎn)型升級(jí)有著重要的支撐作用，
而通信設(shè)備制造業(yè)為信息通信行業(yè)提供基礎(chǔ)設(shè)施，是其基礎(chǔ)性領(lǐng)域。
通信設(shè)備制造業(yè)呈現(xiàn)出以下特點(diǎn)：產(chǎn)業(yè)鏈鏈條清晰，產(chǎn)業(yè)規(guī)模和新產(chǎn)品市場(chǎng)空間以技術(shù)發(fā)展為爆發(fā)點(diǎn)
；需求方規(guī)模經(jīng)濟(jì)效應(yīng)突出；對(duì)其他行業(yè)出高滲透性；市場(chǎng)競(jìng)爭(zhēng)日趨加大，行業(yè)需求，利潤(rùn)
空間受到
1．用I0.0控制接在Q4.0～Q4.7上的8個(gè)彩燈循環(huán)移位，用T37定時(shí)，每0.5 s移1位，首次掃描時(shí)給Q4.0～Q4.7置初值，用I0.1控制彩燈移位的方向，試設(shè)計(jì)語(yǔ)句表程序。
2．在按鈕I4.0按下后Q4.0變?yōu)?狀態(tài)并自保持，I0.1輸入3個(gè)脈沖后(用C1計(jì)數(shù))T37開始定時(shí)，5 s后Q4.0變?yōu)?狀態(tài)，同時(shí)C1被復(fù)位，在可編程序控制器剛開始執(zhí)行用戶程序時(shí)，C1也被復(fù)位，試設(shè)計(jì)梯形圖。
3．當(dāng)I0.1為ON時(shí)，定時(shí)器T2開始定時(shí)，產(chǎn)生每秒一次的周期脈沖。T2每次定時(shí)時(shí)間到時(shí)調(diào)用一個(gè)子程序，在子程序中將模擬量輸入PIW256的值送MWl0，試設(shè)計(jì)主程序和子程序。
4. 多個(gè)傳送帶啟動(dòng)和停止示意圖如圖5.15所示。初始狀態(tài)為各個(gè)電機(jī)都處于停止?fàn)顟B(tài)。按下啟動(dòng)按鈕后，電動(dòng)機(jī)M1通電運(yùn)行，行程開關(guān)SQl有效后，電動(dòng)機(jī)M2通電運(yùn)行，行程開關(guān)SQ2有效后，M1斷電停止，其他傳動(dòng)帶動(dòng)作類推。整個(gè)系統(tǒng)循環(huán)工作。按下停止按鈕后，系統(tǒng)把目前的工作進(jìn)行完后停止在初始狀態(tài)。試設(shè)計(jì)其梯形圖并寫出語(yǔ)句表程序。
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