PLCassignment1.docx
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PLCassignment1.docx
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PLCassignment1
GuangdongUniversityofEducation
BTECCenter
Program:
Electrical/ElectronicEngineering(Electronic)
UnitTitle:
ProgrammableLogicControllers
UnitNo:
22AssignmentTitle:
TheDesignofconveyorsystem
(1)
AssignmentNo.:
2201
IssueDate:
09/12/2012
SubmissionDeadline:
10/12/2012
Assessor/Tutor:
YaniFan
InternalVerifier:
YuhuangZheng
Student:
QingminYu
Student’sReg.No:
DJ43455
NOTESTOSTUDENTS
●Checkcarefullythesubmissiondateandtheinstructionsgivenwiththeassignment.Lateassignmentswillnotbeaccepted.
●Ensurethatyougiveyourselfenoughtimetocompletetheassignmentbytheduedate.
●Donotleavethingssuchasprintingtothelastminute–excusesofthisnaturewillnotbeacceptedforfailuretohand-intheworkontime.
●Youmusttakeresponsibilityformanagingyourowntimeeffectively.
●Ifyouareunabletohandinyourassignmentontimeandhavevalidreasonssuchasillness,youmayapply(inwriting)foranextension.
●Whenyourefertotheworkofotherauthorsinyourassignment,youmustpracticecitationbyfollowingHarvardSystemforReferencing.
●Ifyouarecaughtplagiarizing,youcouldhaveyourgradereducedtozero,oratworst,youcouldbeexcludedfromthecourse.
STUDENT’SDECLARATION:
Iconfirmthatthisisallmyownwork.
StudentSignature:
QingminYu
ASSESSMENT
Outcome/
Skill
Criteria
Evidence
Feedback
Assess
IV
LO1.UnderstandthedesignandoperationalcharacteristicsofaPLCsystem
1.1Evaluatethedesigncharacteristicsoftypicalprogrammablelogicdevices
※EvaluatethereasonwhyyouchooseFXseriesProgrammableLogicControllerasthecorecontrollerinthiscontrolsystem.
1.2Describedifferenttypesofinputandoutputdevice
※Describecharacteristicsofinputandoutputdeviceyouchooseinthiscontrolsystem.
1.3Evaluatethedifferenttypesofcommunicationlinkusedinprogrammablelogiccontrolsystems
※EvaluatethedifferenttypesofcommunicationlinkusedinFXPLCsystems
1.4DescribetheinternalarchitectureandoperationalcharacteristicsoftheCPUofatypicalprogrammablelogicdevice
※DescribetheinternalarchitectureandoperationalcourseofthePLCyouchoose.
LO2.UnderstandPLCinformationandcommunicationtechniques
2.1Evaluatethedifferentformsofsignalusedinprogrammablelogiccontrol
※EvaluatetheseinputandoutputsignalsofPLC
2.4Describethetypicalprotocolsusedinsignalcommunicationandevaluatenetworkingmethodsandnetworkingstandards.
※OffertheconnectiondiagrambetweenPLCandPCanddescribetheprotocolsused.
※Evaluatenetworkingmethodsandnetworkingstandardsinthemodernindustry
AdvancedGradingAssessment
Identifyandapplystrategiestofindappropriatesolutions(M1)
Aneffectiveapproachtostudyandresearchhasbeenapplied
※Evidencescanbeshownthatyouhavelookedupmanyreadingmaterialstoachievethegivenproblem.
select/designandapplyappropriatemethods/techniques(M2)
Relevanttheoriesandtechniqueshavebeenapplied.
※Goodtechniqueshavebeenappliedtoanalysisandillustration.
presentandcommunicateappropriatefindings(M3)
arangeofmethodsofpresentationhavebeenusedand
technicallanguagehasbeenaccuratelyused
※Presentandexpressthesetasksinafluentlanguage.
※Formatofthisassignmentiscorrect
※Makelessgrammarerror
usecriticalreflectiontoevaluateownworkandjustifyvalidconclusions(D1)
Selfcriticismofapproachhasbeentaken.
※evaluateyourimprovementbyfinishingyourwork.
takeresponsibilityformanagingandorganizingactivities(D2)
Autonomy/independencehasbeendemonstrated
※Theworkisproperlyplannedandcarriedout.
demonstrateconvergent/lateral/creativethinking(D3)
effectivethinkinghastakenplaceinunfamiliarcontexts
※Offerreasonableadviceforthesystemaboutnetworkingmethodsthroughrightanalysis.
Assessor’ssignature:
IVagreement:
YesNoIVsignature:
Student’sFeedback
Student’ssignature:
QingminYu
Notes:
AssignmentDescription
Scenario
SupposeyouareanassistantofelectricalengineerinMitsubishi-automationCompany.AccordingtotherequirementofQiyueCompany,whichisoneofyourclients,youneedtofinishthedesignandillustrationoftheelectricalpartforaconveyorsystem.TheengineershavedecidedtouseFXseriesProgrammableControllertocompletethecontrolsystem.ThestructureofsystemisshownasbelowFigure1.
Fig1
Thecontrolrequirementofthisconveyorsystemisasfollow:
1.Pressthestartbutton,the3conveyorbeginsrunning;10secondslater,the2conveyorrunswithautomaticandthen10secondslater,the1conveyorrunsautomatically.
2.Pressthestopbutton,the1conveyorstopsatonce;10secondslater,the2conveyorstopswithautomaticandthen10secondslater,the3conveyorstopsautomatically.
3.Iftheoperatorfindssomeabnormalsituationsinthestartingprocess,heneedstostopthewholesystem:
Pressthestopbutton,theconveyorswhichhavebeenrunningshouldstopaccordingtotheprinciplethattheconveyorwhichstartsearlierstopslater.
4.Eachconveyorcanstart,runandstopindependently.
Astheassistantofelectricalengineer,youmustcompletetwomajortasks:
1.Forthecontrolsystem,yourcompanywillprovidetheclientwithadesignspecificationandyouneedtofinishsomepartsofthedesignspecificationstofurtherillustrateyourdesign,whichyouhavetodointheassignment1.
2.Youneedtofinishdesigninganddebuggingofthecontrolsystemintheassignment2.
Assignment1
Tasks:
1.(PassCriterion1.1)Evaluatethedesigncharacteristicsoftypicalprogrammablelogicdevices.Accordingtothecontrolrequirements,youneedtoevaluatethereasonwhyyouchooseFXseriesProgrammableLogicControllerasthecorecontrollerinthiscontrolsystem.评估典型的可编程逻辑器件的设计特点。
根据控件的要求,您需要评估你为什么选择FX系列可编程逻辑控制器作为核心控制器在此控制系统中的原因。
2.(PassCriterion1.4)DescribetheinternalarchitectureandoperationalcharacteristicsoftheCPUofatypicalprogrammablelogicdevice.DescribetheinternalarchitectureandoperationalcourseofthePLCyouchoosetomaketheusereasytograsptherelevantcontent.描述的内部体系结构和业务特性的一个典型的可编程逻辑设备的CPU。
描述的内部体系结构和业务课程的PLC您选择使用户易于掌握的相关内容。
3.(PassCriterion1.2and2.1)Describedifferenttypesofinputandoutputdevice.Evaluatethedifferentformsofsignalusedinprogrammablelogiccontrol.DescribecharacteristicsofinputandoutputdeviceyouchooseinthiscontrolsystemandexplainhowthesedevicesareconnectedtoPLCandevaluatetheseinputandoutputsignalsofPLC.
描述不同类型的输入和输出设备。
评估不同形式的可编程逻辑控制中使用的信号。
描述特征的输入和输出设备选择此控制系统中,并解释如何这些设备连接到PLC和评估这些输入和输出PLC的信号。
4.(PassCriterion1.3and2.4)Evaluatethedifferenttypesofcommunicationlinkusedinprogrammablelogiccontrolsystems.Describethetypicalprotocolsusedinsignalcommunicationandevaluatenetworkingmethodsandnetworkingstandards.OffertheconnectiondiagrambetweenPLCandPCanddescribetheprotocolsused.EvaluatethedifferenttypesofcommunicationlinkusedinFXPLCsystemsandEvaluatenetworkingmethodsandnetworkingstandardsinthemodernindustrytomeettheuser’sfutureneed.
评估的不同类型的可编程逻辑控制系统中使用的通信链接。
描述使用信号通信中的典型协议和评价网络方法和网络标准。
提供PLC与PC之间的连接图,并说明所使用的协议。
对不同类型的通信链路用于FXPLC系统和评估网络方法和网络在现代工业中的标准,满足用户的未来需要进行评估。
Solution:
1.①AccordingtotheInternet:
andAccordingto[廖常初,2012.‘FXseriesPLCprogrammingandapplication’,1sted.Beijing:
ChinaMachinepress](explanationfrompage10-11).Therefore,thefollowingtable1.
Table1MonolithicPLCcharacteristicsandmoduletypePLCcharacteristicscomparison
Characteristicscomparison
MonolithicPLC
ModularPLC
volume
Small
big
price
low
high
elementaryunit
Have(WiththeCPUmodule,I/Omoduleandthebasicunitofpower)
Without(noneofbasicunit)
reliability
Good
bad
Antiinterference
strong
weak
universality
good
poor
Expansioncapability
strong
weak
Structureinstallation
simple
complex
②AccordingtotheInternet:
,andAccordingto[廖常初,2012.‘FXseriesPLCprogrammingandapplication’,1sted.Beijing:
ChinaMachinepress](explanationfrompage14-15).
Wecangetthetable2showstheFXseriesPLCcharacteristics:
Table2characteristicsoftheFXseriesPLC
Integratedcost-effective
Thesystemconfigurationisfixedandflexible
Asimpleprogramming
Afreechoice,richvariety
reassuringhighperformance
Highspeedoperation
usedforavarietyofspecialpurpose
Externalcommunicationsimplemachines
Advancedaestheticexteriorstructure
TinyminiPLC
Conclusion:
fromthetable1andtable2,wecanseeFXseriesPLCadvantages,sothisismychoiceofFX-PLCreason.
2.①theinternalstructureofPLC:
Accordingto[廖常初,2012.‘FXseriesPLCprogrammingandapplication’,1sted.Beijing:
ChinaMachinepress](explanationfrompage1-2)
Thefigure2.1showstheinternalstructureofPLC
:
Fig.2.1ThePLCinternalstructure
②⑴workingprinciple:
PLChastwobasicmodes,istorunmodeandstopmode.Wherethetwomodesofoperation,PLCuserprogramexecutionthroughrepeatedtoachievecontrol.PLCoutputtomakeatimelyresponsetotheinputsignalmaychangeatanytime,userprogramexecutiontoberepeateduntilthePLCshutdownorswitchtoSTOPmode.Inadditiontooutsideuserprogramexecution,inthecourseofeachcycle,PLCcyclecompletionbutalsotheinternalprocessing,communicationsservices,inputprocessing,programexecutionandoutputprocessingtodealwithth
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