CAN order on not always transmitted XNET

I try to send a message BOX using a PXI-8512.  I have an updated database in place.  When I write CAN data, it turns on an icon on a screen.   It works 90% of the time on a known good unit.  However, 10% of the time, I call this sub - vi (below) which is supposed to enable the icon, and the icon never lights.  I thought that maybe I wasn't give him enough time before I closed the session, so I increased the timer loop to 1500 ms, but that did not help.  (I think the timer loop was 500 ms before I increased it).  Does anyone have any ideas as to why this message is not received correctly some of the time?

The timer is running, but it might be the first or last, as you don't sequence them at all.

The CAN bus is a shared bus. 1.5 s between the images is probably long enough, but if you use a slow flow and the bus is busy, you might get squeezed out.

Your other option, if you want all images to convey, is to use a session in queue instead of a single point of the session. And you expect to send to be complete prior to the closing.

Tags: NI Products

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