Hi Roberto,
> I need to connect a LPC2294 to a CAN J1939 network, but I don't have
> any previous experience.
>
> Has anybody some sw examples / app notes / links?
>
> Any suggestion on how to work with 29-bit identifiers?
I would suggest starting here:
http://www.sae.org/standardsdev/groundvehicle/j1939a.htm
Joel