How to speed up the NI 9853 CAN data acquiring with ID filters

[LUX_]

Hi,

I am using NI 9853 on a cRio 9111 to collecting CAN data. I am only interested in three IDs from the CAN database.

I need collect the CAN data in a 10 hz base.

I am using FPGA and Labview real time.

The problem I have is that somehow the CAN seems receiving the three ID frame randomly. I can't get all three frame within the 10 hz period.

(I can get all ID data in every 2-3 seconds.)

Attached is the testing project(LV 2009, FPGA and Real time). Is there any way to make CAN fast or to optimize the code to make it work?

Thanks!

[O_Proulx]

Hello LUX_,

It is possible that these frames are only going on the bus every few seconds...which means you will only be reading them every few seconds.  Are you sure that all 3 frames are going on the bus within100ms?  You could use the shipping example that logs all frames to a file to find out exactly.

[LUX_]

Thanks O. Proulx.

Somehow after I re-write the same FPAG code on a new vi, it is magically working now.

The CAN loop is 100 or even 1000 times faster than before. I was able to get all three frame within the 10Hz period.

Thanks for your reply.

Lux_