【正文】 e Class.You heard too many this phrases perhaps: crash, the meaning that is mostly is a workload of CPU to lead greatly, the internal resources shortage etc. the circumstance can39。PLC的內部包含了具有中央處理器的CPU，并帶有外部I/O口擴展的I/O接口地址和存儲器三大塊組成，CP。單靠人工的操作已不能滿足于目前的制造業(yè)前景,也無法保證更高質量的要求和高新技術企業(yè)的形象.人們在生產實踐中看到,自動化給人們帶來了極大的便利和產品質量上的保證,同時也減輕了人員的勞動強度,、整體優(yōu)化、最佳決策等,熟練的操作工、技術人員或專家、管理者卻能夠容易判斷和操作,、模擬這些智能行為,通過人腦與計算機協(xié)調工作,以人機結合的模式,為解決十分復雜的問題尋找最佳的途徑我們在各種場合看到了繼電器連接的控制，那已經是時代的過去，如今的繼電器只能作為低端的基層控制模塊或者簡單的設備中使用到；而PLC的出現(xiàn)也成為了劃時代的主題，通過極其穩(wěn)定的硬件穿插靈活的軟件控制，使得自動化走向了新的高潮。t do other works.When you are reading the book, you hear someone knock on door, you stop to start up of affair, open the door and bine to continue with the one who knock on door a dialogue, the telephone of this time rang, you signal hint to connect a telephone, after connecting the telephone through, return overdo e together knock on door to have a conversation, after dialogue plete, you continue again to see your book, this kind of circumstance we are called the interruption to it, it has the authority, also having sex of have the initiative, the PLC had such function .Its characteristics lie in us and may meet the urgently abrupt affairs in the operation process of the equipments, we want to stop to start immediately up of work, the whereabouts manages the more important affair, this kind of circumstance is we usually meet of, PLC while carry out urgent mission, total will keep the current appearance first, for example the address of the procedure, CPU of tired add the machine data etc., be like to to stick down which the book that we see is when we open the door the page or simply make a mark, because we treat and would still need to continue immediately after book of see the behind. The CPU always does the affair that should do according to our will, but your mistake of give it an affair, it also would be same to do, this we must notice.The interruption is not only a, sometimes existing jointly with the hour several inside break, break off to have the preferred Class, they will carry out the interruption of the higher Class according to person39。t send out and accept at the same time, for example when you make a phone call is to can39。t guarantee the equipments by the control of the single machine, but pass the information exchanges of the equipments and equipments to attain the result that we want. For example fore pack and the examination of the empress work preface, we will arrive wrapping information feedback to examine the place, and examine the information of the place to also want the feedback to packing. Pass the information share thus to make both the chain connect, being a total body, the match of your that thus make is more close, at each other attain to reflect the result that mutually flick.The PLC correspondence has already e more more body now its value, at the PLC and correspondence between PLCs, can pass the munication of the information and the share of the datas to guarantee that of the equipments moderates mutually, the result that arrive already to repair with each other. Data conversion the adoption RS232 between PLC connect to e to the transmission data, but the RS232 pick up a people and can guarantee 10 meters only of deliver the distance, if in the distance of 1000 meters we can pass the RS485 to carry on the correspondence, the longer distance can pass the MODEL only to carry on deliver.The PLC data transmission is just to be called a form to it in a piece of and continuous address that the data of the inner part delivers the other party, we, the PLC of the other party passes to read data in the watch to carry on the operation. If the data that data in the watch is a to establish generally, that is just the general data transmission, for example today of oil price rise, I want to deliver the price of the oil price to lose the oil ally on board, that is the share of the data。 But lead even is a fatal error greatly is what we can39。And the PLC emergence also became the epochmaking topic, adding the vivid software control through a very and stable hardware, making the automation head for the new high tide.The PLC biggest characteristics lie in: The electrical engineering teacher already no longer electric hardware up too many calculationses of cost, as long as order the importation that the button switch or the importation of the sensors order to link the PLC up can solve problem, pass to output to order the conjunction contact machine or control the start equipments of the big power after the electric appliances, but the exportation equipments direct conjunction of the small power can.PLC internal containment have the CPU of the CPU, and take to have an I/ O for expand of exterior to connect a people39。t guarantee the request of the higher quantity and high new the image of the technique business enterprise.The people see in produce practice, automate brought the tremendous convenience and the product quantities for people up of assurance, also eased the personnel39。 2012年6月13日參考文獻[1][J].機電信息，2011,30：5859[2][J].中國高新技術企業(yè)，2010,14:21[3]郭麗娟,[J].電大理工，2006,3:4142[4][J]. 科技資訊，2011，15[5]潘汝濤. 淺談PLC的發(fā)展[J].考試周刊，2011，21[6][M]，北京：中國氣象出版社，[7][M]，北京：北京理工大學出版社，2000[8]顧戰(zhàn)松,[M]，北京：國防工業(yè)出版社，1996[9]——運動控制系統(tǒng)[M]. 北京：.[10]許翏,[M]，北京：機械工業(yè)出版社，2010[11]Wilks, James G.。通過查詢圖書，翻閱資料，在網(wǎng)上搜索資料，和老師、同學溝通，我順利完成了自己的畢業(yè)設計。致謝通過畢業(yè)設計，我學到了很多東西也發(fā)現(xiàn)了自己很多的不足。沒有進行系統(tǒng)仿真，很多隱藏的問題就沒辦法進行很好的解決。在保證功能和質量的前提下,所需費用要有優(yōu)勢，本設備采用PLC全程控制，所用的材料都考慮了使用條件和范圍以及所需費用,其工作過程為排殘液清水沖洗消毒液沖洗無菌水沖洗 CO2備壓，操作簡單,效率高,易于大規(guī)模和單個用戶使用。本軟件包適用于三菱（MITSUBISHI FA）FX0N/1N/1S/2N/2NC、AnS/AnA、MELSEC全系列工控PLC系統(tǒng)的程序編制 主程序，氣沖，氣沖，氣沖圖4 2梯形圖結論和展望時光流逝，不知不覺我的大學生涯即將結束，畢業(yè)設計也接近尾聲。：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