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.&nbsp; Take a look at this <a href="http://forums.ni.com/ni/board/message?board.id=30&amp;message.id=3120&amp;requireLogin=False" target="_blank">Discussion Forum</a> and see if it does the trick.&nbsp; However, I need a bit more information about your second question.&nbsp; I'm curious about the specifics of how LabVIEW "locks up".&nbsp; Is this a permanent crash or does it just freeze for a few minutes while control is transfered to another process?&nbsp; Also, what is the context of the lock up?&nbsp; Thanks for answering these follow up questions, I look forward to the response!