Heavy duty vehicles
CAN is designed for in-vehicle networks (IVN) and gains acceptance also as on-vehicle network (OVN). IVN applications include engine management (drivetrain) and chassis electronics. OVN are used to connect add-on equipment or to connect trailers and implements.
In-vehicle networks
Most of the in-vehicle networks in heavy-duty vehicles used for power-train applications are based on the J1939-71 application profile specified by the SAE (Society of Automotive Engineers) in United States of America. This application profile standardizes the CAN messages and their content exchanged between the ECUs (electronic control units).
On-vehicle networks
On-vehicle networks may also be based on the J1939 transport layer and on additional specifications for the dedicated content of the messages. Not all message contents are harmonized with J1939-71. The messages and signals specified for ISO 11992-2/3 (truck/trailer communication link) and ISO 11783 series (network for agriculture and forestry machines) are partly harmonized with J1939-71.
CANopen networks are also used as on-vehicle networks for body and superstructure applications. This includes crane control systems, fire-fighting equipment, garbage-truck superstructures, etc.
