【文章內(nèi)容簡(jiǎn)介】 連續(xù)按鈕SB3小水柱接觸器KM3單步按鈕SB4花朵式噴泉接觸器KM4花樣1按鈕SB5旋轉(zhuǎn)式噴泉接觸器KM5花樣2按鈕SB6花樣3按鈕SB7花樣4按鈕SB8圖33花樣噴泉PLC控制梯形圖圖33中，第1邏輯行為啟動(dòng)控制程序；第4邏輯行組成6s移位脈沖控制程序；第5邏輯行為單步／連續(xù)控制程序；第9邏輯行組成花樣選擇控制程序；第1113邏輯行組成移位及復(fù)位控制程序；第111118邏輯行組成驅(qū)動(dòng)控制程序。接通PLC電源，其在第14邏輯行中的常開(kāi)觸點(diǎn)閉合，為噴泉的啟動(dòng)做好了準(zhǔn)備。當(dāng)按下噴泉控制器的啟動(dòng)按鈕SB1后。本程序默認(rèn)為連續(xù)循環(huán)噴泉樣式的控制程序，按鈕SB2為連續(xù)按鈕，按鈕SB3為單步按鈕，當(dāng)按下此按鈕，，其在第1邏輯行中的常閉觸點(diǎn)斷開(kāi)，噴泉樣式進(jìn)入一次運(yùn)行狀態(tài)。選擇默認(rèn)狀態(tài)，按下SB4，第6行中輸入繼電器常開(kāi)觸點(diǎn)閉合，其在第111118邏輯行中的常開(kāi)觸點(diǎn)閉合，進(jìn)入第一種噴泉樣式，大水柱控制接觸器KM1通電閉合，大水柱“1” 射向天空。、定時(shí)器T37被接通開(kāi)始計(jì)時(shí)，經(jīng)過(guò)3s后，T37動(dòng)作，第3邏輯行的常開(kāi)觸點(diǎn)閉合，定時(shí)器T38被接通并開(kāi)始計(jì)時(shí)，又經(jīng)過(guò)3s后，T38動(dòng)作。，將字元件MW10中的內(nèi)容向左移1位，“1”。，其在第14邏輯行中的常開(kāi)觸點(diǎn)閉合，中水柱控制接觸器KM2通電閉合，中水柱噴出。又經(jīng)過(guò)6s后，將字元件MW10中的內(nèi)容向左移一位，“1”，、16邏輯行中的常開(kāi)觸點(diǎn)閉合，、噴出大水柱、小水珠。經(jīng)過(guò)第7個(gè)6s后，“1”，、11118邏輯行中的常開(kāi)觸點(diǎn)閉合；所有輸出繼電器全部閉合，所有噴泉一起噴發(fā)。又經(jīng)過(guò)6s后，“1”，“0”，，； ，大水柱噴發(fā)。如此不斷循環(huán)，直到按下SB2。第4章 程序調(diào)試調(diào)試步驟如圖所示： （1） 按下啟動(dòng)按鈕，噴泉進(jìn)入待命狀態(tài)，如圖41所示。圖41程序調(diào)試圖（2）選擇單步運(yùn)行，如圖42所示。圖42程序調(diào)試圖（3）按下第一種運(yùn)行方式，噴泉開(kāi)始運(yùn)行，如圖43所示。圖43程序調(diào)試圖當(dāng)噴泉第八種噴射花樣結(jié)束后，噴泉進(jìn)入停止?fàn)顟B(tài)。在此調(diào)試過(guò)程中，主要觀察噴射花樣的運(yùn)行是否符合程序的設(shè)定。其余三種循環(huán)方式，也是在噴泉處于單步運(yùn)行狀態(tài)時(shí)，進(jìn)行調(diào)試。噴泉的四種循環(huán)方式選擇開(kāi)關(guān)，可在噴泉處于單步運(yùn)行狀態(tài)時(shí)，進(jìn)行調(diào)試。噴泉運(yùn)行狀態(tài)下，按下噴泉循環(huán)方式選擇按鈕，完成四種方式間的切換調(diào)試。以上調(diào)試完成后，噴泉在默認(rèn)（連續(xù)）狀態(tài)下啟動(dòng)，噴泉一直運(yùn)行下去。第5章 結(jié)論通過(guò)本次畢業(yè)設(shè)計(jì)，利用 PLC在控制上的優(yōu)越性，使噴泉在實(shí)際生活中的噴水花樣，變化更多，更加完美。本設(shè)計(jì)采用PLC控制,利用PLC體積小、功能強(qiáng)、可靠性高,且具有較大的靈活性和可擴(kuò)展性的特點(diǎn),通過(guò)改變噴泉的控制程序或改變方式選擇開(kāi)關(guān),就可以改變花樣噴泉的噴水規(guī)律,從而變換出各式花樣,以適應(yīng)不同季節(jié)、不同場(chǎng)合的噴水要求。能給人的視覺(jué)系統(tǒng)帶來(lái)一種更加美的享受。致謝本畢業(yè)設(shè)計(jì)從開(kāi)始工作到最終的完成都離不開(kāi)我的指導(dǎo)老師劉桂林老師的悉心指導(dǎo)和幫助。劉老師的嚴(yán)謹(jǐn)治學(xué)態(tài)度、淵博的知識(shí)、無(wú)私的奉獻(xiàn)精神使我深受啟迪。從劉老師身上，我不僅學(xué)到了扎實(shí)、寬廣的專業(yè)知識(shí)，也學(xué)到了做人的道理。在此我要向劉老師致以最衷心的感謝和深深的敬意。在完成設(shè)計(jì)的過(guò)程中，感謝眾多同學(xué)和任課教師的熱情幫助。最后，衷心感謝各位老師對(duì)我的設(shè)計(jì)進(jìn)行評(píng)審，有不足之處，敬請(qǐng)批評(píng)指正。參考文獻(xiàn)[1] SIMATIC S7200系統(tǒng)手冊(cè)[M]. 北京：西門子（中國(guó)）有限公司,2004[2] 西門子S7200可編程序控制器系統(tǒng)手冊(cè)[M].西門子有限公司,1999[3] SIEMENS公司的S7200用戶指南[M]. 工業(yè)控制計(jì)算機(jī),2002.[4] S7200可編程序控制器系統(tǒng)手冊(cè)[M]. 工業(yè)控制計(jì)算機(jī),2001[5] 吳愛(ài)萍. PLC控制的設(shè)計(jì)技巧[M]. 工業(yè)控制計(jì)算機(jī),2003[6] 吳明洞. PLC控制的設(shè)計(jì)技巧[J]. 工業(yè)控制計(jì)算機(jī)學(xué)報(bào),2003[7] 廖常初. S7200 基礎(chǔ)教程[M]. 北京：機(jī)械工業(yè)出版社，2006[8] 廖常初. PLC應(yīng)用技術(shù)問(wèn)答[M].北京：機(jī)械工業(yè)出版社，2006ag an employment tribunal clai Emloyment tribunals sort out disagreements between employers and employees. You may need to make a claim to an employment tribunal if: you don39。t agree with the disciplinary action your employer has taken against you your employer dismisses you and you think that you have been dismissed unfairly. For more informu, take advice from one of the organisations listed underFurther help. Employment tribunals are less formal than some other courts, but it is still a legal process and you will need to give evidence under an oath or affirmation. Most people find making a claim to an employment tribunal challenging. If you are thinking about making a claim to an employment tribunal, you should get help straight away from one of the organisations listed underFurther help. ation about dismissal and unfair dismissal, seeDismissal. You can make a claim to an employment tribunal, even if you haven39。tappealedagainst the disciplinary action your employer has taken against you. However, if you win your case, the tribunal may reduce any pensation awarded to you as a result of your failure to appeal. Remember that in most cases you must make an application to an employment tribunal within three months of the date when the event you are plaining about happened. If your application is received after this time limit, the tribunal will not usually accept i. If you are worried about how the time limits apply to you If you are being represented by a solicitor at the tribunal, they may ask you to sign an agreement where you pay their fee out of your pensation if you win the case. This is known as adamagesbased agreement. In England and Wales, your solicitor can39。t charge you more than 35% of your pensation if you win the case.you39。re clear about the terms of the agreement. It might be best to get advice from an experienced adviser, for example, at a Citizens Advice Bureau. To find your nearest CAB, including t