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2. TABLEOF CONTENT
• 1
• Copyright © Appin Technology Lab
• •Introduction of PLC
• •Introduction of Scada
• •What is PLC
• •Importance of PLC
• •How PLC works
• •What is Scada
• •Importance of Scada
• •How Scada works
• •Components of SCADA
• •Scada Architectures
• •Why Plc-Scada
• •Benefits Of PLC-Scada
• •Scope of PLC-Scada
• TABLEOF CONTENT

3. INTRODUCTION OF PLC
• Programmablelogiccontrollers(PLCs)havebeenanintegralpartoffactoryauto
mationandindustrialprocesscontrolfordecades.PLCscontrolawidearrayofapp
licationsfromsimplelightingfunctionstoenvironmentalsystemstochemicalpro
cessingplants.Thesesystemsperformmanyfunctions,providingavarietyofanal
oganddigitalinputandoutputinterfaces;signalprocessing;dataconversion;and
variouscommunicationprotocols.AllofthePLC'scomponentsandfunctionsare
centeredaroundthecontroller,whichisprogrammedforaspecifictask.
• ThebasicPLCmodulemustbesufficientlyflexibleandconfigurabletomeetthed
iverseneedsofdifferentfactoriesandapplications.Inputstimuli(eitheranalogor
digital)arereceivedfrommachines,sensors,orprocesseventsintheformofvolta
georcurrent.ThePLCmustaccuratelyinterpretandconvertthestimulusfortheC
PUwhich,inturn,definesasetofinstructionstotheoutputsystemsthatcontrolac
tuatorsonthefactoryfloororinanotherindustrialenvironment