Measurement Studio for VB6

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VB6 application using GPIB fails in Windows 7

Re: VB6 application using GPIB fails in Windows 7

Daisy,

 

Go to this link http://vmetrix.home.comcast.net/~vmetrix/downloads.html.

You can download the source code for a large application that uses GPIB-USB-HS with VB6.

If you have a problem with the download or other questions:  clark@vmetrix.com

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Message 21 of 26 (2,587 Views)
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Re: VB6 application using GPIB fails in Windows 7

Hi Everybody.

 

I am facing similar problem, but almost sure it is OS related.

 

My system here is a Win 7 64bits, I downloaded the latest drivers and software from NI site. I am using a VB6 pro edition. In this system, the serial poll query is not working properly for any equipment. Sometimes after performing a serial poll, where the status byte indicates that the MAV bit is set, the following command is ibread to the instrument which returns an empty string or simply times out. If I do not perform the serial poll,  the ibread command returns string as expected. I checked and enabled the bits with *SRE accordingly, even this command sometimes hungs when sent to the equipment. If I go to a Win XP 32 bits, the program runs properly.

 

 

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Message 22 of 26 (2,473 Views)
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Re: VB6 application using GPIB fails in Windows 7

Hi Angelo,

 

Are you using the same GPIB devices on both systems?  Have you also checked in Measurement & Automation Explorer to see if the GPIB controller's settings are identical between the 2 machines?  Specifically make sure that the autopolling settings match on both systems.

Justin D
Applications Engineer
National Instruments
http://www.ni.com/support/
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Message 23 of 26 (2,461 Views)
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Re: VB6 application using GPIB fails in Windows 7

Hi Angelo,

 

I also ran across this tidbit of information in the GPIB driver help. If you are using a 64-bit application this could cause issues as well.

 

gpib.jpg





Justin D
Applications Engineer
National Instruments
http://www.ni.com/support/
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Message 24 of 26 (2,457 Views)
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Re: VB6 application using GPIB fails in Windows 7

I wrote a VB6 program using NI USB GPIB card.  The program runs OK in VB6 edidtor, but when I make an executable version of it, error : file not found: gpib-32.dll.

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Message 25 of 26 (211 Views)
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Re: VB6 application using GPIB fails in Windows 7

Hi lblKL2,

 

Are you running this executable on the same computer or on a different computer? On my computer, this dll is found in SysWOW64.

 

Andy F.
Applications Engineering
National Instruments
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Message 26 of 26 (205 Views)
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