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1、PLC自動(dòng)配料系統(tǒng)設(shè)計(jì)摘要PLC的定義有許多種。國際電工委員會(huì)(IEC)對PLC的定義是:可編程控制器是一種數(shù)字運(yùn)算操作的電子系統(tǒng),專為在工業(yè)環(huán)境下應(yīng)用而設(shè)計(jì)。它采用可編程序的存貯器,用來在其內(nèi)部存貯執(zhí)行邏輯運(yùn)算、順序控制、定時(shí)、計(jì)數(shù)和算術(shù)運(yùn)算等操作的指令,并通過數(shù)字式、模擬式的輸入和輸出,控制各種類型的機(jī)械或生產(chǎn)過程??删幊绦蚩刂破骷捌溆嘘P(guān)設(shè)備,都應(yīng)按易于與工業(yè)控制系統(tǒng)形成一個(gè)整體,易于擴(kuò)充其功能的原則設(shè)計(jì)。PLC具有通信聯(lián)網(wǎng)的功能,它使PLC與PLC之間、PLC與上位計(jì)算機(jī)以及其他智能設(shè)備之間能夠交換
2、信息,形成一個(gè)統(tǒng)一的整體,實(shí)現(xiàn)分散集中控制。多數(shù)PLC具有RS-232接口,還有一些內(nèi)置有支持各自通信協(xié)議的接口。配料工人收到每天的生產(chǎn)作業(yè)表后,將依次對每種原料進(jìn)行稱重?根據(jù)配料的多少,先計(jì)算每種成分的重量,然后在各種成分的料桶中取料,傳送到電子稱上進(jìn)行稱重,最后進(jìn)行包裝。關(guān)鍵詞通信傳送配料包裝40PLCautomaticbatchingsystemdesignAbstracttherearemanykindsofPLCdefinition.Theinternationalelectrotechnica
3、lcommission(IEC)isdefinedasofPLCprogrammablecontrollerisakindofdigitalcomputingoperations,speciallydesignedfortheelectronicsysteminindustrialenvironmentapplicationanddesign.ItUSESprogrammableCunZhuQi,usedinitsinternalstoragetoperformthelogicoperation,sequ
4、encecontrol,timing,countingandarithmeticoperationinstruction,andthroughdigital,analoginputandoutput,thecontrolvarioustypesofmachineryorproductionprocess.Programmablecontrollerandrelatedequipment,shouldpresseasyandindustrialcontrolsystemasawhole,easytoexte
5、nditsfunctionprincipledesign.PLCwithcommunicationnetworkingfunction,itmakesPLCandPLC,betweenthePLCandthePCandotherintelligentequipmenttoexchangeinformationbetween,formingaunifiedwhole,realizescatteredcentralizedcontrol.MostPLChasRS-232interface,andsomebui
6、lt-inhavetosupporttheircommunicationprotocolinterfaces.Ingredientsworkersreceivedailyproductionscheduling,willinturnforeachfeedstock.Accordingtohowmuchweighingingredients,firstcalculatedtheweightofeachcomponentinvariouscomponents,andthenthematerialbarrels
7、materialtaking,toelectronicsaysonthepackagingweighingand.Keywordscommunicationtoconveyburdentopack40目錄1緒論51.1課題來源及現(xiàn)實(shí)意義51.1.1課題來源51.1.2現(xiàn)實(shí)意義51.2設(shè)計(jì)任務(wù)與總體方案的確定51.2.1設(shè)計(jì)任務(wù)51.2.2總體設(shè)計(jì)方案的確定52PLC與自動(dòng)化軟件62.1PLC的發(fā)展歷史62.2PLC的硬件和軟件72.2.1PLC的硬件構(gòu)成72.2.2PLC的軟件構(gòu)成82.3PLC系統(tǒng)的輔助
8、設(shè)備82.4PLC的通訊聯(lián)網(wǎng)92.5PLC的注意事由92.6自動(dòng)化軟件發(fā)展歷史及定義…………….…………………………………102.7發(fā)展趨勢……………………………………………………………….112.8監(jiān)控組態(tài)軟件WINCC的簡介和應(yīng)用……………………….………………....122.8.1WINCC簡介……………………………………………………….....122.8.2WINCC的特點(diǎn)………………………………………………………13