design and implement of a programmable logic contr

可编程逻辑控制器在实验室控制的设计与实现IntelligentControlandAutomation,2012,3,44-49http://dx.doi.org/10.4236/ica.2012.31006PublishedOnlineFebruary2012(http://www.SciRP.org/journal/ica)DesignandImplementofaProgrammableLogicController(PLC)forClassicalControlLaboratory*YousifI.AlMashhadanyElectricalEngineeringDepartment,CollegeofEngineering,UniversityofAnbar,Baghdad,IraqEmail:yousif_phd@hotmail.comReceivedOctober31,2011;revisedDecember1,2011;acceptedDecember9,2011ABSTRACTThedesignandimplementationofaclassicalcontrolsystemlaboratorybasedonPLCcontrolsystemisintroducedinthispaper.Todesignandimplementthesystem,twopartsmustbeproduced.ThefirstissoftwareforPLCandthesec-ondishardwareforexperimentsrelatedtotheprograms.ThePLCcontrolsystemusedinthedesignisLSindustrialsystemcompanyGM7-DR40A24/16DigitalI/OandsingleAnalogI/Omodule,twophotoelectricsensorsfromAtoniccompany’:thefirstwiththemodelBR100-DDT-P,andthesecondBEN10M-TFR.Anapproximatesensorwith5-sidesisdetected,fourofCMOSBCD-7-SegmentdrivenbyCD4511B,tworelays:2-pole