J1939 Transport Protocol NI-CAN

[DirkW]

Hi,
I found an example for a multipacket transmission on the web and you can find it attached to this post. on page 17 and 18 it is described how to send the multiple packet messages. You could use the frame api or the channel api which brings allready J1939 ID support in MAX to create the frame content.
DirkW


J1939_Example.pdf:
http://forums.ni.com/attachments/ni/30/2436/1/J1939_Example.pdf

[DirkW]

Good catch.
My guess is that this 00ECFF is the PGN and has the source address added already. Besides that it is shown LSB first. So if the source address is FF and the PGN is 0xEC00 that translates to 0x00ECFF.
The same is true for the other PGNs: 0xEB00 converts to 0x00EBFF with source address FF and LSB first.
DirkW

[manumohan]

Hi,
Would it be possible to share the code you have developed for multiframe message(BAM and TP.DT)
If not,please give a brief on the same