NI 9853 reads same message multiple times

[sumit04]

Hi,

When i tried to read on NI 9853 CAN 0 port, it will always reads the last message if there are no messages on CAN bus.

I have attached screenshot on my code. 

In the code read counter is 0 unless i dont send any message on CAN, When i send single message on CAN(using other tool connected to same can bus), read counter gets incremented by 1 on every 10msec. I check all CAN message everything is same, Mod1/CAN0 somehow reads the same message every 10 msec ..

Attached CAN log also.

Thanks in advance.

[GerdW]

Hi sumit,

how do you create this logfile?

Mind to share code?

I never noticed such behaviour with a NI9853...

[Intaris · Accepted solution]

On the read side of the FIFO you need to act on the timeout. The FIFO returns the last valid data on a timeout. Maybe that is your problem.

[sumit04]

hi GerdW,

I have a vi, which contentiously reading CAN message from NI-9853 Mod0 and writing it to ASCI file.

[sumit04]

Hi Intaris,

Thanks for reply, I have specified timeout of 0, i will check with timed out? property and let you know.