s7-200對三菱變頻器遠程控制

1、I摘要隨著計算機網(wǎng)絡(luò)技術(shù)的發(fā)展及工廠自動化程度的不斷提高開放性和多功能的網(wǎng)絡(luò)通信要求成為了PLC的必備條件。在實際應(yīng)用中，PLC主機與擴展模塊之間要進行信息交換，PLC主機與其他主機或其他設(shè)備之間也經(jīng)常進行信息交換。所以通過這次課題的設(shè)計對PLC與變頻器之間的通信方式得到一個初步的認識，這次的課題主要學(xué)習(xí)S7200與三菱變頻器之間最基本的通信方式。通過查閱資料把課題擬定，S7200與三菱變頻器串行口通信研究。定好課題開始學(xué)習(xí)S7200以

2、及三菱變頻器的通信格式，由PLC發(fā)出啟動、停止、運行頻率等指令，來控制變頻器的運轉(zhuǎn)及頻率輸出。在導(dǎo)師指導(dǎo)下經(jīng)過多次修改、調(diào)試定下程序的梯形圖。通過這次課題設(shè)計提高了自己獨立工作的能力和創(chuàng)造力，加強了對基礎(chǔ)及專業(yè)的運用能力，讓我對PLC又加深一步的了解。PLC作為工業(yè)自動控制的核心部分，單機編程和維護相對簡單一點，而工業(yè)網(wǎng)絡(luò)通信要求同時兼顧穩(wěn)定性、快速性、靈活性及與第三方設(shè)備的兼容性，所以工業(yè)網(wǎng)絡(luò)通信成為工業(yè)自動化系統(tǒng)設(shè)置及實施的難點。變

3、頻器與PLC在自由口模式下通信，具有很大的靈活性，方便了工程應(yīng)用。AbstractWiththedevelopmentofcomputerwktechnologyfactyautomationdegreeriseceaselesslyOpenmultifunctionwkcommunicationrequirementsofPLCbecometheessentialcondition.InpracticalapplicationtheP

4、LChostextensionmoduletoexchangeinfmationbetweenPLChostotherhostotherequipmentalsooftenexchangeinfmation.SothroughthistopicdesignofcommunicationbetweenPLCfrequencyconvertermeanstogetapreliminaryunderstingthistopicmainlyto

5、learnS7200MitsubishiInverterbetweenthemostbasicmeansofcommunication.AccesstoinfmationthroughtheresearchprotocolS7200MitsubishiInverterserialptcommunicationresearch.SetthetaskstartedlearningS7200MitsubishiInvertercommunic

6、ationfmatbythePLCtostartstoprunthefrequencyofsuchinstructiontocontroltheinverteroperationfrequencyoutput.Inundertheguidanceofamentafterseveralmodificationsdebuggingsetprogramladdert.Throughthistopicdesignimprovestheirabi

7、litytowkindependentlycreativitystrengthenthebasicprofessionalskillsletItoPLCtodeepentheunderstingofonepace.PLCasthecepartofindustrialautomaticcontrolsingleprogrammingmaintenanceofrelativelysimplewhiletheindustrialwkcommu

8、nicationrequirementsofbothstabilityrapidityflexibilitycompatibilitywiththirdpartyequipmentsotheindustrialcommunicationwksbecomeindustrialautomationsystemsettingsIII目錄摘要....................................................

9、..........................................................................IAbstract...........................................................................................................................I目錄...........

10、...............................................................................................................III第一章緒論.....................................................................................................

11、.............11.1串行通信基本概念及特點串行通信基本概念及特點.....................................................................................................11.2串行通信的分類串行通信的分類..............................................................

12、.......................................................11.2.1通信協(xié)議...................................................................................................................21.2.2通信設(shè)備..............................

13、.....................................................................................3第二章PLC的自由口串行通信.................................................................................52.1自由口指令及應(yīng)用自由口指令及應(yīng)用...................

14、..............................................................................................52.1.1自由口指令..............................................................................................................52.1.

15、2相關(guān)寄存器及標志...................................................................................................52.2PLC的格式設(shè)定的格式設(shè)定...............................................................................................

16、......................7第三章變頻器通信（本章由單璐所作）..............................................................83.1串行通訊功能串行通訊功能......................................................................................................

17、...................83.2變頻器通信格式變頻器通信格式.....................................................................................................................8第四章程序............................................................

18、....................................................134.1流程圖流程圖...................................................................................................................................134.2PLC連接變頻器帶動電動機啟動接線圖連接變

19、頻器帶動電動機啟動接線圖...........................................................................144.3指令表指令表..........................................................................................................................

20、.........144.4梯形圖梯形圖...................................................................................................................................18第五章結(jié)論..............................................................

21、..................................................305.1結(jié)論結(jié)論.......................................................................................................................................30致謝......................

22、....................................................................................................31參考資料..................................................................................................................