These Recommended Practices are intended for light@ medium@ and heavy duty vehicles used on or off road as well as appropriate stationary applications which use vehicle derived components (e.g. generator sets). Vehicles of interest include@ but are not limited to: on and off highway trucks and their trailers; construction equipment; and agricultural equipment and implements. The purpose of these Recommended Practices is to provide an open interconnect system for electronic systems. It is the intention of these Recommended Practices to allow Electronic Control Units to communicate with each other by providing a standard architecture. Degree of Openness An SAE J1939 network is open to the degree that any two ECUs which conform to the same SAE J1939-0X document can be connected via the network and communicate with each other without functional interference. The SAE J1939-0X documents describe a specific type of application@ typically representing a specific industry to which it pertains such as agricultural or heavy duty trucks. ECUs which conform to a different SAE J1939-0X document may not be capable of communicating directly with one another and in some cases may cause degradation or complete disruption of the entire network. Proof of Compliance There is no procedure presently in place to test@ validate@ or provide formal approval for ECUs utilizing the SAE J1939 network. Each developer is expected to design their products to the spirit of@ as well as the specific content of@ this recommended practice. Provisions are made in SAE J1939-11 and SAE J1939-15 for self certification to these documents. In the future@ additional procedures may be defined and implemented to test new products to ensure full compliance with all appropriate SAE J1939 documents. Until that time@ compliance will be determined by the manufacturer of the component. Should questions arise regarding the use or interpretation of any part of these recommended practices they should be directed to the SAE Control and Communications Subcommittee for resolution.
2013SAE J1939DA-2013 Digital Annex of Serial Control and Communication Heavy Duty Vehicle Network Data-Jul2013 (See Also SAE J1939; Includes Access to Additional Content)