【正文】
t result in procedure circulate. The PLC also has the similar circumstance, there is a watchdog WDT in the inner part of PLC, we can establish time that a procedure of WDT circulate, being to appear the procedure to jump to turn the mistake in the procedure movement process or the procedure is busy, movement time of the procedure exceeds WDT constitution time, the CPU turn but the WDT reset the appearance. The procedure restarts the movement, but will not carry on the breakage to the interruption.The PLC development has already entered for network ages of correspondence from the mode of the one, and together other works control the net plank and I/ O card planks to carry on the share easily. A state software can pass all se hardwares link, more animation picture of keep the view to carries on the control, and cans pass the Internet to carry on the control in the foreign land, the blastoff that is like the absolute being boat is to adopt this kind of way to make airship go up the sky.The development of the higher layer needs our continuous effort to PLC emergence has already affected a few persons fully, we also obtained more knowledge and precepts from the top one experience of the generation, ing to the continuous development PLC technique, push it toward higher wave tide.中文翻譯可編程控制器技術討論與未來發(fā)展隨著時代的發(fā)展,當今的技術也日趨完善、競爭愈演愈烈。 A work of half is also 2 and can can send out similar to accept the data, but can39。 The saving machine can deposit the data that the I/ O input in the saving machine, and in work adjusting to bee tired to add the machine and I/ Os to connect, saving machine separately saving machine RAM of the procedure saving machine ROM and datas, the ROM can can do deposit of the data permanence in the saving machine, but RAM only for the CPU putes the temporary calculation usage of hour of buffer space.The PLC anti interference is very and excellent, our root need not concern its service life and the work situation bad, these all problems have already no longer bee the topic that we fail, but stay to our is a concern to e to internal resources of make use of the PLC to strengthen the control ability of the equipments for us, make our equipments more gentle.PLC language is not we imagine of edit collected materials the language or language of Cs to carry on weaving the distance, but the trapezoid diagram that the adoption is original after the electric appliances to control, make the electrical engineering teacher while weaving to write the procedure very easy prehended the PLC language, and a lot of non electricity professional also very quickly know and go deep into to the PLC.Is PLC one of the advantage above and only, this is also one part that the people prehend more and easily, in a lot of equipmentses, the people have already no longer hoped to see too many control buttons, they damage not only and easily and produce the artificial error easiest, small is not a main error perhaps you can still accept。t satisfied with the current manufacturing industry foreground, also can39。我們只有不斷的學習新興知識,不斷的充實自己,才能不被社會所淘汰。由于時間緊迫,且個人能力有限,雖然總體設計要求達到了,但并沒有進行系統(tǒng)仿真。支持梯形圖、指令表、SFC、 ST及FB、Label語言程序設計,網(wǎng)絡參數(shù)設定,可進行程序的線上更改、監(jiān)控及調(diào)試,具有異地讀寫PLC程序功能,結構化程序的編寫(分部程序設計),可制作成標準化程序, 在其它同類系統(tǒng)中使用。過流保護:很多電子設備都有個額定電流,不允許超過額定電流,不然會燒壞設備。它具有控制系統(tǒng)(又稱輸入回路)和被控制系統(tǒng)(又稱輸出回路)之間的互動關系。當線圈斷電時,電磁吸力消失,銜鐵在釋放彈簧的作用下釋放,使觸頭復原:常閉觸頭閉合;常開觸頭斷開。根據(jù)設計要求,故選擇PLC的型號為FX2N64MR001。(2)響應時間不同繼電器響應時間比較慢(約10ms20ms),晶體管響應時間比較快,Y0、Y1甚至可以達到10 PLC輸出類型選擇PLC的輸出類型有繼電器和晶體管兩種類型,兩者的工作參數(shù)差別較大,1.繼電器和晶體管輸出工作原理繼電器是一種電子控制器件,它具有控制系統(tǒng)(又稱輸入回路)和被控制系統(tǒng)(又稱輸出回路),通常應用于自動控制電路中。PLC為用戶提供許多計數(shù)器,計數(shù)器計數(shù)到某一數(shù)值時,產(chǎn)生一個狀態(tài)信號(計數(shù)值到),利用該狀態(tài)信號實現(xiàn)對某個操作的計數(shù)控制。這就要求在選擇PLC、輸入/輸出模塊、I/O點數(shù)和內(nèi)存容量時,要適當留有裕量,以滿足今后生產(chǎn)的發(fā)展和工藝的改進。同時要注意和現(xiàn)場的工程管理人員、工程技術人員、現(xiàn)場操作人員緊密配合,擬定控制方案,共同解決設計中的重點問題和疑難問題。(1)清洗時,每次清洗液均由內(nèi)圈注入,由內(nèi)圈注入可利用清洗液的壓力直接沖刷酒桶底部。第2章 系統(tǒng)總體設計方案 清洗機 隨著社會的發(fā)展,人們生活水平的提高,人們可以花更多的時間和金錢來改善自己的飲食,許多場合都將用到啤酒,而且這個市場也越來越大,所以生產(chǎn)啤酒及保鮮的桶也將隨之增漲,因而對于啤酒桶的清洗也是一次重要工種和很大的市場。本設備是專為啤酒桶的清洗、消毒設計的。PLC是集自動控制技術,計算機技術和通訊技術于一體的一種新型工業(yè)控制裝置,已躍居工業(yè)自動化三大支柱(PLC、ROBOT、CAD/CAM)的首位。第1章 緒論1968年,美國最大的汽車制造商——通用汽車公司為滿足市場需求,適應汽車生產(chǎn)工藝不斷更新的需要,將汽車的生產(chǎn)方式由大批量、少品種轉(zhuǎn)變?yōu)樾∨?、多品種。s electricity control the aspect got the extensive application. It have the function strong and big, the usage is dependable, maintain the many advantage of simple etc., and already and gradually replaced after the logic control of the electric appliances electric circuit in a lot of places. But what the text discussion is a PLC in the actual industry to control the system39。該設備可以自動完成清洗消毒及CO2備壓等全部工序。它具有功能強大、使用可靠、維修簡單等許多優(yōu)點,并且在很多地方已逐步取代了繼電器電路的邏輯控制。采用無菌過濾、無菌包裝的純生啤酒日益受到消費者的歡迎,純生啤酒的市場份額逐步增加,發(fā)展形勢十分樂觀。1985年國際電工委員會(IEC)對PLC的定義如下:可編程控制器是一種進行數(shù)字運算的電子系統(tǒng),是專為在工業(yè)環(huán)境下的應用而設計的工業(yè)控制器,它采用了可以編程的存儲器,用來在其內(nèi)部存儲執(zhí)行邏輯運算、順序控制、定時、計數(shù)和算術運算等操作的指令,并通過數(shù)字或模擬式的輸入和輸出,控制各種類型機械的生產(chǎn)過程。與繼電——接觸器系統(tǒng)相比系統(tǒng)更加可靠;占位空間比繼電——接觸器控制系統(tǒng)??;價格上能與繼電——接觸器控制系統(tǒng)競爭;易于在現(xiàn)場變更程序;便于使用、維護、維修;能直接推動電磁閥、觸器與于之相當?shù)膱?zhí)行機構;能向中央執(zhí)行機構;能向中央數(shù)據(jù)處理系統(tǒng)直接傳輸數(shù)據(jù)等。由于可編程控制器在工業(yè)控制方面的應用意義日趨明顯,已在機械制造、發(fā)電、化工、電子等行業(yè)工藝設備的電氣控制方面得到了廣泛的應用。本設備為倒置清洗方式適用桶的尺寸為高度H360—H560,直徑Φ250—Φ500即容積為5L,10L,20L的標準啤酒桶。(1)桶定位 按下啟動按扭,氣壓缸下壓啤酒桶2秒,使清洗頭將桶蓋頂開(2)排殘酒 1秒后清水閥開、清水循環(huán)閥開,1秒后排出閥開,排出殘酒,14秒后排出閥關;(3)清水清洗|氣沖 |消毒液清洗 |氣沖 16秒后清水閥關、清水循環(huán)閥關、氣沖閥開,1秒后排出閥開,4秒后氣沖閥關、排出閥關、消毒液閥開、消毒循環(huán)閥開、消毒液回流閥開,32秒后消毒液閥關、消毒循環(huán)閥關、氣沖閥開,6秒后氣沖閥關、消毒液回流閥關、清水閥開、清水循環(huán)閥開(4)無菌水清洗|氣沖 1秒排出閥開,6秒后清水閥關、清水循環(huán)閥關、氣沖閥開,1秒排出閥開,6秒后氣沖閥關、排出閥關(5)CO2備壓 1秒后CO2閥開,4秒后自動停機第3章 PLC控制系統(tǒng)方案設計 PLC控制系統(tǒng)設計的基本原則任何一種控制系統(tǒng)都是為了實現(xiàn)被控對象的工藝要求,以提高生產(chǎn)效率和產(chǎn)品質(zhì)量。因此,在滿足控制要求的前提下,一方面要注意不斷地擴大工程的效益,另一方面也要注意不斷地降低工程的成本。定時器的設定值(定時時間)可以在編程時設定,也可以在運動過程中根據(jù)需要進行修改,使用方便靈活。I / O 接口的作用:電平轉(zhuǎn)換功能:由于外部輸入設備和輸出設備所需的信號電平是多種多樣的,而PLC內(nèi)部CPU的處理的信號是標準電平信號。(1)驅(qū)動負載不同 繼電器型可接交流220V或直流24V負載,沒有極性要求;晶體管型只能接直流24V負載,有極性要求。晶體管輸出驅(qū)動電流小,頻率高,壽命長,適用于控制伺服控制器、固態(tài)繼電器等要求頻率高、壽命長的應用場合。圖3 3電磁閥 接觸器接觸器(Contactor)是指工業(yè)電中利用線圈流過電流產(chǎn)生磁場,使觸頭閉合,以達到控制負載的電器。空氣開關是低壓配電網(wǎng)絡和電力拖動系統(tǒng)中非常重要的一種電器,它集控制和多種保護功能于一身。熱繼電器是比較理想的自我保護的設備,在工業(yè)應用中一般,都用熱繼電器來過載保護。:圖3 6 線圈保護裝置第4章 系統(tǒng)設計 PLC控制電路設計 I/O口分配表表4 1I/O口分配表類別端子符號功能作用輸入X001啟動按鈕X002停止按鈕X003過載X00405公升桶選擇按鈕