GPIB connection fault after checking connection in NI MAX
Hi,
I have a problem with a system I am using.
I am connecting to 3 Keithley 2410 power supplies in labview using the Agilent 82357B USB/GPIB Interface.
The labview program works... but if I check the GPIB connection in NI MAX or in Agilent connections expert before/ during using labview then Labview can no longer connect to the power supplies. It can originally connect to the first two and then the third connection fails following by them all failing.
Any help would be much appreciated,
Thanks
E
Sounds like you just forced access to the GPIB resource from your LabVIEW program and then you couldn't get the access back. In general, it is a really bad idea to have multiple programs access the same bus.
There are only two ways to tell somebody thanks: Kudos and Marked Solutions
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Hi,
I think I have a problem with Labview.
At the start, all work correctly. But if I unplug the GPIB connector and replug it later, labview "freeze" at "GPIB Read".
Nothing happen, and I can't stop the process (the "start" button stay black, wathever I do)
The only solution is to close the VI and reload it.
But when I do this, a message appear "Name of the VI: Resetting VI", and it stay forever . . .
At this point, I must restart Labview by the task manager. And when I restart it, all work properly again.
But sadly, I can't restart Labview again and again (some problems with my network, and the license is on it), so that why I'm here.
I almost forgot: The problem don't come from the GPIB's hardware connection because NI MAX work properly (I can scan for intruments and communicate with them)
Since English is not my native langage, I may have done some errors, sorry about that.
Thank you for your help !
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I'm also using the NI 488.2 v3.1.1 driver.What exactly do you mean by "unplug the GPIB connector"? Are you referring to the USB connector? If so, what you are doing is causing all of the references to the hardware that your VI has setup invalid. This is one of the reasons I avoid USB GPIB.
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Thanks,968217 wrote:
All,
My sincere apologies to post this here, but I did not find the answer anywhere.
I have a task to convert some SQL Server Scripts to Oracle.
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IF NOT EXISTS (SELECT [schema_id] FROM [sys].[schemas] WHERE [name] = N'HRMS')
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END
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Can we have any similar kind of solution / statement in oracle. Please help me.
When I read in the Oracle Docs, CREATE SCHEMA statement is just to bundle multiple sql statements to a single transaction.
http://docs.oracle.com/cd/B19306_01/server.102/b14200/statements_6014.htm
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