SAE J1939-22 is the CAN FD evolution of the J1939 family. In SAE’s own high-level description, it brings CAN’s flexible data rate capability into J1939 to support higher efficiency, parallel transactions, functional safety, and cybersecurity-oriented extensions, while preserving the J1939 application model built around PGNs, SPNs, source addresses, requests, diagnostics,…
Posts tagged as “SAE J1939-22”
I have long been a vocal critic of the barely readable standards issued by SAE International. And to be fair, SAE is hardly alone—standards bodies, as a species, seem united by a peculiar compulsion: the need to prove their intellectual worth by rendering their documents as impenetrable as possible. Clarity,…
Executive Summary The global shift toward electrification in the commercial vehicle sector, particularly in medium- and heavy-duty trucks, is reshaping automotive communication standards. SAE J1939, the de facto standard for vehicle network communication in diesel-powered commercial vehicles, now faces a new challenge—and opportunity—as electric trucks become more prominent. This report…
The Society of Automotive Engineers (SAE) J1939 standards define a communication protocol for networking and diagnostics among electronic control units (ECUs) in heavy-duty vehicles. With advancements in vehicle electronics and the need for higher data transmission rates, the SAE introduced updates to the J1939 standard to incorporate the capabilities of…
