J1939 -71 is now delivered as a large spreadsheet(digital annex) which makes it much easier to search. J1939 implementations from scratch is still a large task. Have you ever considered adding an SPN library to IQAN Design. Clicking on an SPN automatically assigns a parameter to the correct PGN frame with the default J1939 -71 descriptions. It also automatically adds that SPN to the DM1 list. I think this would speed up J1939 implementations.
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