RV-C - Relationship To SAE J1939

Relationship To SAE J1939

RV-C draws heavily from the SAE J1939 protocol. The primary differences between J1939 and RV-C are:

  • RV-C does not encourage the use of shielded cable. Shielding increases cost significantly, with questionable benefit.
  • SAE J1939 does not support RV-C's "instancing".
  • The main diagnostic message (DM1) has somewhat different formats, due to the need in RV-C for instance identification.
  • The SAE J1939 NAME PGN is simplified in RV-C.

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