The RVIA set of profiles for recreational vehicle communication

The CiA 501 specification defines the J1939-based communication profile for recreation vehicles. The communication profile uses the CAN high-speed physical and data link layers as well as higher-layer protocols similar to SAE J1939.

The CiA 502 specification defines the recreation vehicle application profile based on the CiA 501 communication profile for recreation vehicle. The application profile defines signals and parameters as well as parameter groups similar as in SAE J1939. However, they are not compliant with SAE J1939 or with other J1939-based application profiles such as ISO 11992 (truck/trailer point-to-point network) or ISO 11783 (in-vehicle network for agriculture and forestry vehicles).

Both profiles are being developed in co-operation with the Recreation Vehicle Industry Association (RVIA).