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j1939 tier 4 message receive issue

Codie 3 years ago in IQANdesign • updated by Gustav Widén (System support) 3 years ago • 4

I'm having issues receiving a J1939 message. Both FF15 and FF14. They are Tier 4 emissions system data and I can see them with my CAN sniff. they show up as 19FF1500H and 19FF1500H. I have my priority set to dont care and my timeout not used and still cant bring them in. Why am i unable to read these messsages?

Julian Robinson 3 years ago

Hi there.  If you have used those exact letter/numbers as your 29bit header, then this is the problem.  the "H" is probably a designation from your CAN tool that its in hex.  The 29bit ID most likeley has a SA of 00 (engine ECM) so those would be the last digits to use in the header  ie 19FF1500 is the actual CAN ID.

Codie 3 years ago

hello, yes the H is just shown from my Pcan. Im using decimal number 65300 and 65301 as my recieve PGN for FF15 and FF14. 

Codie 3 years ago

and yes the source address 00 is the engine. This is a tier4 emissions system engine that i need to display the info from.

+1
Gustav Widén (System support) 3 years ago

With CAN identifier 0x19FF1500, the DP bit is set. 

To read this in IQANdesign, enter the 17-bit PGN 0x1FF15 (130837)

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