Noticed some issues with how NI DNET card handles problems

[Olaje]

We have noticed 2 issues with using the PXI NI-DNET (PXI-8461) card and Labview (8.5).

1.  The scanner doesn’t recover from a lost of DNET power

- With network work up and everything scanning

- The Dnet DC power is turned off and then turned back on

-  All nodes are rest from the power cycle which is common

- However, when we try to scan the network again, Labview faults with can’t initialize card I believe

- No nodes restart

The DNET card seems to not be monitoring the network DC power and releasing the handles and/or trying to rescan the attached nodes.

Work around: Restart the PXI or in Max, remove and reinstall DNET card

The work around are not a good solution.  Is there another solution and why isn't the card restarting. 

2.  When Labview locks up, the DNET card keeps scanning.  When this happens the last setpoints are still being sent.  This can be a problem if a heating is being controlled.  

 No work around

Is there any watch dog for this issue?

[Chris G in AE]

Howdy Olaje,

I think I've found a solution for your first question.  Take a look at this Discussion Forum and see if it does the trick.  However, I need a bit more information about your second question.  I'm curious about the specifics of how LabVIEW "locks up".  Is this a permanent crash or does it just freeze for a few minutes while control is transfered to another process?  Also, what is the context of the lock up?  Thanks for answering these follow up questions, I look forward to the response!