用PLC對(duì)自動(dòng)售貨機(jī)系統(tǒng)的控制

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11、prise development in t he用 PLC 對(duì)自動(dòng)售貨機(jī)系統(tǒng)的控制一、控制要求計(jì)幣系統(tǒng)、比較系根據(jù)售貨機(jī)自動(dòng)控制系統(tǒng)的流程可以知道自動(dòng)售貨機(jī)的主要系統(tǒng)包括： 統(tǒng)、選擇系統(tǒng)、飲料供應(yīng)系統(tǒng)、退幣系統(tǒng)和報(bào)警系統(tǒng)。1 計(jì)幣系統(tǒng)：當(dāng)有顧額色買飲料時(shí)，投入的錢幣經(jīng)過感應(yīng)器，感應(yīng)器記憶投幣的個(gè)數(shù)關(guān)且傳送到檢測(cè)系統(tǒng)（即電子天平）和計(jì)幣系統(tǒng)。只有當(dāng)電子天平測(cè)量的重量少于誤差值時(shí)，允許計(jì)幣系統(tǒng)進(jìn)行疊加錢幣，疊加的錢幣數(shù)據(jù)存放在數(shù)據(jù)寄存器D2 中。如果不正確時(shí)，認(rèn)為是假幣。既定出投幣，既定出系統(tǒng)，等待新顧客。2 比較系統(tǒng)：投入完畢后，系統(tǒng)會(huì)把D2 內(nèi)錢幣數(shù)據(jù)和可以購(gòu)買飲料的價(jià)格進(jìn)行區(qū)間比較，當(dāng)投入

12、的錢幣小于 2 元時(shí)，指示燈Y0 亮，顯示投入的錢幣不足。此時(shí)可以再投幣或選擇退幣。當(dāng)投稿的錢幣在 23 元之間時(shí)，汔水選擇指示燈長(zhǎng)亮。當(dāng)大于 3 元時(shí)， 汔水和咖啡的指示燈同時(shí)長(zhǎng)亮。此時(shí)可以選擇飲料或選擇退幣。3 選擇系統(tǒng)：比較電路完成后選擇電路指示燈是長(zhǎng)亮的，當(dāng)按下汽水或咖啡選擇時(shí)，相應(yīng)的選擇指示燈由長(zhǎng)亮轉(zhuǎn)為以1 秒為周期閃爍。當(dāng)飲料供應(yīng)完畢時(shí)，閃爍同時(shí)停止。4 飲料供應(yīng)系統(tǒng)：當(dāng)按下選擇按鈕時(shí)，相應(yīng)的電磁閥（ Y4或Y6）和電機(jī)（Y3或Y5）同時(shí)啟動(dòng)。在飲料輸出的同時(shí)，減去相應(yīng)的購(gòu)買錢幣數(shù)。當(dāng)飲料輸出達(dá)到8 秒時(shí)，電磁閥首先關(guān)斷，小電機(jī)繼續(xù)工作 0.5 秒后停機(jī)。此小電機(jī)的作用是：在輸出飲

13、料時(shí)，加快輸出。在電磁閥關(guān)斷時(shí)，給電磁閥加壓作用，加速電磁閥的關(guān)斷。（注：由于該售貨機(jī)是長(zhǎng)期使用，電磁閥使用過多時(shí)，返回彈力減少，不能完全關(guān)斷會(huì)出現(xiàn)漏飲料的現(xiàn)象。此時(shí)電機(jī)Y3 和 Y5 延長(zhǎng)工作0.5 秒起到電磁閥加壓的作用，使電磁閥可以完好的關(guān)斷。）5 退幣系統(tǒng)：當(dāng)顧客購(gòu)?fù)觑嬃虾?，多余的錢幣只要按下退幣按鈕。系統(tǒng)就會(huì)把數(shù)據(jù)寄存器D2 內(nèi)的錢幣數(shù)首先除以10 得到整數(shù)部分，是 1 元錢需要退回的數(shù)量，存放在 D10 里。 余數(shù)存放在D11 里。再用 D11 除以 5 得到的整數(shù)部分是5 角錢需要退回的數(shù)量，存放在 D12 里。 余數(shù)存放在D13里。最后D13 里面的數(shù)值，就是1 角錢需要退回的

14、數(shù)量。在選擇退幣的同時(shí)啟動(dòng)3 個(gè)退幣電機(jī)。 3 個(gè)感應(yīng)器開始計(jì)數(shù)，當(dāng)感應(yīng)器記錄的個(gè)數(shù)等于數(shù)據(jù)寄存器退回的幣數(shù)時(shí)，退幣電機(jī)停止運(yùn)轉(zhuǎn)。6 報(bào)警系統(tǒng)：報(bào)警系統(tǒng)如果是非故障報(bào)警，只要通過網(wǎng)絡(luò)通知送液車或者送幣車即可。但是如果是故障報(bào)警則需要通知維修人員到現(xiàn)聲進(jìn)行維修。同時(shí)停止服務(wù)，避免造成顧客的損失。7 題目要求:1 PLC 編程要求:PLC 的 X0、 X1 分別對(duì)應(yīng)1 元入口、5 角入口，Y0、 Y1 分別表示汽水和咖啡指示燈。當(dāng)投入幣值小于1 元時(shí)，汽水和咖啡指示燈都不亮；當(dāng)投入幣值大于或等于1元而小于2 元時(shí)，汽水指示燈亮; 當(dāng)投入幣值大于或等于2 元時(shí),汽水和咖啡指示燈同時(shí)亮.2 .觸摸屏畫

15、面要求:畫面上顯示“ Total Money ” ，在其下而實(shí)時(shí)顯示所投入自動(dòng)售貨機(jī)的幣值。用兩個(gè)指示燈實(shí)時(shí)的顯示汽水和咖啡指示燈的狀態(tài)。3 在試卷上畫出PLC 的 IO 分配圖、PLC 的梯形圖和觸摸屏的畫面。fback boneba ckbone role; tanother acrossa railing, weare eofull stre ngthening membersyouthwnthusiastica ndfullork,fullplayyouthempl oyeesi n company developmentis,we moreexciting fightmorespir

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18、unarcal endaron De cember24,theox Bellis abouttoring ,atthis time ofyear,weclearlyfeelt hepulseofthe XX pow ergeneratin compa nyto flourish,tomoreclearlyhearXX powerge neration companies mature asymmetrybreathing. Recalli ng past、主要系統(tǒng)配置1. FX2N-48MR PLC 一臺(tái):、PLC輸入點(diǎn)與輸出點(diǎn)的分配表 輸入點(diǎn)分配表：名 稱代號(hào)輸入編號(hào)名稱代號(hào)輸入編號(hào)1角錢幣

19、入口X0退幣感應(yīng)器SB4X105角錢幣入口X1汽水液量不足X111元錢幣入口X2咖啡液量不足X12汽水選擇按鈕SB2X31元錢幣不足X13咖啡選擇按鈕SB3X45角錢幣不足X141元退幣感應(yīng)器X51角錢幣不足X155角退幣感應(yīng)器X6啟動(dòng)SB0X161角退幣感應(yīng)器X7急停SB1X17輸出分配表:名 稱代號(hào)輸入編號(hào)名稱代號(hào)輸入編號(hào)錢幣不足ELY0沒有汽水報(bào)警ELY11汽水選擇燈ELY1沒有咖啡報(bào)警ELY12咖啡選擇燈ELY21元傳動(dòng)電機(jī)KM3Y13汽水電機(jī)KM1Y35角傳動(dòng)電機(jī)KM4Y14汽水電磁閥YV1Y41角傳動(dòng)電機(jī)KM5Y15咖啡電機(jī)KM2Y5咖啡電磁閥YV2Y6無(wú)幣報(bào)警ELY7四、序設(shè)計(jì)流

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