Intermittent visa BFFF0011 with viOpen error

I'm contacting a 2700 Keithey DMM via TCP/IP, and very occasionally, when I call viOpen, it will fail with BFFF0011 error code. Everyone knows that before and if so, what was the cause? I checked the patch ethernet lead and in any case (I think) it happened on another instrument on the system.

Does anyone have any suggestions as to what I might try?

Thank you

monkeyfinger wrote:

Thanks for the suggestion. I think it would work. My only concern with the maintenance of the open instrument is that if he loses power - I seem to remember that it causes the calling thread to hang, but maybe it's a more manageable problem!

I'll have to give it a go.

Thanks again for the suggestion.

If the unit loses power VISA (modern versions of NI-VISA) calls will return with an error TMO (device found but not to recognize the session descriptor) or 1 (device not present, "always off") error simple mistakes to manage reconfiguring the device in the first case or incentive at the technology to see why the aircraft fell in offline mode in the second case.

Any system requiring a high reliablility needs a UPS!  Thus, the power is not interrupted.  Any Long term test average of gracefully suspended for maintenance needs.

Tags: NI Hardware

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