Transcription of Controller Area Network (CAN)
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Controller Area Network (CAN)
Controller area Network (CAN)EECS 461, Fall 2008 J. A. CookJ. S. Freudenberg1 IntroductionUp until now, we ve considered our embedded control system to be self-contained: an algorithm implementedin software resident on a single microprocessor, communicating with its environment through sensors andactuators via peripheral devices such as an analog-to-digital converter. In fact, many embedded systems aredistributed, consisting of multiple microprocessors communicating over one or more networks to accomplishshared tasks.
Field 11 Bit Identifier SOF SOF Bus Idle RTR RTR RTR IDEr0 CRC Delimiter ACK Delimiter ACK Slot Arbitration Field Control Field DLC r1,r0 r1,r0 7 Bit EOF 3 Bit INT ACK Data 0-8 Bytes Bus Idle 11 Bit Identifier DLC Data 15 Bit CRC CAN 2.0A Message Frame CAN 2.0B Message Frame (Standard Format) SOF SRR Arbitration Field Bus Idle 11 Bit Identifier DLC
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