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Using LabVIEW 2011 with Windows XP and cRIO. I am using a Cognitive label printer via USB. I created a VISA driver using the wizard and it works beautifully. The problem that I have is that when I remove the Cognitive label printer and replace it with the same model, the device driver does not work with the printer.

It appears that the driver is specific to the serial number of the printer. This does not work well if our product goes into the field and we have a printer failure which requires replacement of the printer. The question is: how do I make the device driver generic for the printer model?

Hi, I apologize for my ignorance! I didn't describe the problem very well. What I was doing was using a constant to open the barcode printer. The constant was generated by the project when I browsed for VISA devices. The constant was specific to the installed barcode printer. To get around this, I gave it an alias of 'BarcodePrinter'.

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That still didn't work for me. To make a long story short, I dug into the VISA VI's and found 'Find Resource' and made the search string 'USB?::0x1840::0x0100::?.' . That resolved the issue.

Thanks for your help.