Blog tagged as UDS
8. Higher-Layer Protocols: CANopen, J1939, and UDS
December 15, 2025 12:42 PM - Comment(s)
As we’ve seen throughout this series, a CAN frame is intentionally simple: 11 or 29 bits of identifier, data payload. This minimalism makes CAN fast, deterministic, and flexible—but it also means that different industries needed ways to define what those bytes represent.


