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ISO 11898-1 Standard (2015) - includes CAN and CAN-FD specifications; Bosch CAN Specification Version 2.0 (1991, 1997) - also known as Classical CAN and CAN-Classic; Bosch CAN-FD Specification Version 1.0 (2012) - increase data rates up to 8 Mbit/s; Bosch CAN-FD-Light (future) - cost-optimized subset of CAN-FD
CAN FD is an extension to the original CAN bus protocol that was specified in ISO 11898-1. CAN FD is the second generation of CAN protocol developed by Bosch. [1] The basic idea to overclock part of the frame and to oversize the payload dates back to 1999. [2]
The Bosch CAN specification itself allows messages being transmitted both periodically and aperiodically but does not cover issues like data representation, node addressing or connection-oriented protocols. CAN is entirely based on Anyone-to-Many (ATM) communication which means that CAN messages are always received by all stations in the network.
Pages in category "CAN bus" The following 9 pages are in this category, out of 9 total. This list may not reflect recent changes. ...
The CAN protocol was developed by Bosch for automotive and industrial control. Unlike other OBD protocols, variants are widely used outside of the automotive industry. While it did not meet the OBD-II requirements for U.S. vehicles prior to 2003, as of 2008 all vehicles sold in the US are required to implement CAN as one of their signaling ...
This was true as of 2000. Since then, CAN has been included, the chipset for J1939 has been clocked faster [clarification needed], and 16-bit addresses (PGN) have replaced 8-bit addresses. J1939, ISO 11783 and NMEA 2000 all share the same high level protocol. SAE J1939 can be considered the replacement for the older SAE J1708 and SAE J1587 ...
The number of nodes can be limited by either number of available addresses or bus capacitance. None of the above use any analog domain modulation techniques like MLT-3 encoding , PAM-5 etc. PSI5 designed with automation applications in mind is a bit unusual in that it uses Manchester code .
As defined in ISO 15765-4, emissions protocols (including OBD-II, EOBD, UDS, etc.) use the ISO-TP transport layer (ISO 15765-2). All CAN frames sent using ISO-TP use a data length of 8 bytes (and DLC of 8). It is recommended to pad the unused data bytes with 0xCC. The PID query and response occurs on the vehicle's CAN bus.