Transcription of Introduction to the Controller Area Network (CAN) (Rev. B)
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Introduction to the Controller Area Network (CAN) (Rev. B)
1 SLOA101B August2002 RevisedMay 2016 SubmitDocumentationFeedbackCopyright 2002 2016,TexasInstrumentsIncorporatedIntrodu ctionto the ControllerAreaNetwork (CAN) CANopenis a trademarkof CANin a trademarkof OpenDeviceNetVendorAssociation, August2002 RevisedMay 2016 Introductionto the ControllerAreaNetwork(CAN) controllerareanetwork (CAN) is ideallysuitedto the manyhigh-levelindustrialprotocolsembraci ngCANand ISO-11898:2003as cost,performance,and upgradeabilityprovidefortremendousflexib ilityin introductionto the CANfundamentals,operatingprinciples,and the implementationof a basicCANbus with TI's CANtransceiversand electricallayerrequirementsof a CANbus are discussedalongwith the importanceof thedifferentfeaturesof a TI Bit Fieldsof StandardCANand of Figures1 The LayeredISO InvertedLogicof a a a RecessiveBus of TablesDSPor ControllerApplication LayerData-LinkLayerLogic Link ControlMedium AccessControlPhysicalLayerPhysical SignalingPhysical Medium AttachmentMedium-Dependant InterfaceEmbeddedCANC ontrollerCANT ransceiverCAN Bus-LineElectricalSpecifications.
attractive for use within a real-time control environment. The lower the binary message identifier number, the higher its priority. An identifier consisting entirely of zeros is the highest priority message on a network because it holds the bus dominant the longest. Therefore, if two nodes begin to transmit simultaneously,
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