CAN bus

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* CAN-1 (1986): Original Bosch protocol

* CAN-2.0 (1991): Bosch update, later standardized by ISO 11519 (1993)

** CAN-2.0A (ISO 11898-3, 2006): 11-bit identifiers, up to 125Kbit/s (CAN-Lo, "Basic CAN", "Reliable CAN")

** CAN-2.0A (ISO 11898-3, 2006): 11-bit identifiers, up to 125Kbit/s (CAN-Lo, "Basic CAN", "Reliable CAN"). Star/linear bus.

** CAN-2.0B (ISO 11898-2, 2003, 2016): 29-bit identifiers, up to 1Mbit/s (CAN-High, "Full CAN")

** CAN-2.0B (ISO 11898-2, 2003, 2016): 29-bit identifiers, up to 1Mbit/s (CAN-High, "Full CAN"). Linear bus, 120Ω at each end.

* ISO 11898-1: Data link layer common to CAN-2.0A and B

* [https://en.wikipedia.org/wiki/CAN_FD CAN-FD] (2012): Bosch extension to CAN-2.0 for up to 64B messages + better CRC

* [https://en.wikipedia.org/wiki/ISO_15765-2 ISO 15765-2] (2016): "Road vehicles: Diagnostic communication over CAN" ISO-TP L3/L4 for larger (up to 4095B) packets, 15Mbit/s

* [https://en.wikipedia.org/wiki/ISO_11783 ISO 11783] (2017): "ISOBUS" at 250Kbit/s, 4-wire terminating plug-and-play bias circuits (power, ground, CAN)

* more...

==Participants==

The various nodes of a CAN are known as ECUs (Electronic Control Units). Each can be assumed to include a microprocessor, a (possibly integrated) ISO 11898-1 CAN controller, and a ISO 11898-2/3 transceiver ("medium access unit"). Each ECU must have its own ID unique among the nodes. Depending on the flavor of CAN, IDs are either 11 or 29 bits.

===CAN IDs===

Lower IDs have priority over higher IDs

CAN bus: Difference between revisions

Dank (talk | contribs)

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 * CAN-1 (1986): Original Bosch protocol
 * CAN-2.0 (1991): Bosch update, later standardized by ISO 11519 (1993)
-** CAN-2.0A (ISO 11898-3, 2006): 11-bit identifiers, up to 125Kbit/s (CAN-Lo, "Basic CAN", "Reliable CAN")
+** CAN-2.0A (ISO 11898-3, 2006): 11-bit identifiers, up to 125Kbit/s (CAN-Lo, "Basic CAN", "Reliable CAN"). Star/linear bus.
-** CAN-2.0B (ISO 11898-2, 2003, 2016): 29-bit identifiers, up to 1Mbit/s (CAN-High, "Full CAN")
+** CAN-2.0B (ISO 11898-2, 2003, 2016): 29-bit identifiers, up to 1Mbit/s (CAN-High, "Full CAN"). Linear bus, 120Ω at each end.
 * ISO 11898-1: Data link layer common to CAN-2.0A and B
 * [https://en.wikipedia.org/wiki/CAN_FD CAN-FD] (2012): Bosch extension to CAN-2.0 for up to 64B messages + better CRC
 * [https://en.wikipedia.org/wiki/ISO_15765-2 ISO 15765-2] (2016): "Road vehicles: Diagnostic communication over CAN" ISO-TP L3/L4 for larger (up to 4095B) packets, 15Mbit/s
+* [https://en.wikipedia.org/wiki/ISO_11783 ISO 11783] (2017): "ISOBUS" at 250Kbit/s, 4-wire terminating plug-and-play bias circuits (power, ground, CAN)
+* more...
+==Participants==
+The various nodes of a CAN are known as ECUs (Electronic Control Units). Each can be assumed to include a microprocessor, a (possibly integrated) ISO 11898-1 CAN controller, and a ISO 11898-2/3 transceiver ("medium access unit"). Each ECU must have its own ID unique among the nodes. Depending on the flavor of CAN, IDs are either 11 or 29 bits.
+===CAN IDs===
+Lower IDs have priority over higher IDs