"Error -3 occurred at ni579x Send User Command.vi"

Question

Hello Everyone!
I am using NI PXIe-1082 with a K7 FPGA and a 5791 FAM. Occasionally, I receive the following error:
Error -3 occurred at ni579x Send User Command.vi
Possible reason(s):
User Command or FAM CLIP error Status: 0, Error: 220, Return Value: 0
Does anyone knows what does this happen?
Regards
Arash

Answer 1

Another possibility is to simply close the reference yourself not using their subVI. All the close really needs to do is call the ADO Close method for the connection object that was opened earlier, and then close the object reference itself using the Close Reference function.
Part of the problem with troubleshooting this is trying to figure out what extra fru-fra the DCT is imposing on what is basically a pretty simple process. If you would like to try them, I posted the VIs that I use for all my database work a while ago on the forum. If you can't find them let me know and I'll repost them in LV8.2. The main difference with the DCT (beside the fact that I don't have the cajones to try and charge for them) is that for the most part they are a very thin layer sitting on top of the ADO drivers. The main advantage of this approach is that if you are troubleshooting it's a lot easier to figure out what is happening.
By the way, unlike what you might expect, the Microsoft documentation on ADO is really good.
Mike...
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Certified LabVIEW Architect
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