Question about Datalogic QS6500BT Barcode Scanner - Barcode Scanner

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Datalogic QS6500BT barcode scanner and 2D codes

I have a Datalogic QS6500BT barcode scanner that I use regularly. When the scanner was purchased, it was specially configured to be able to read PDF-417 style barcodes. The company I work for is now getting in a new part that appears to have a MicroPDF style code on the box. My scanner acts like it is reading the code, but never downloads any data to my PC. Is there something I need to do to the scanner to be able to read what I think is a microPDF label?? Thanks for any guidance here.

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  • anchorjoe Jan 16, 2009

    The scanning within the document seemed to work as far as what the scanner should be doing, but when I try to scan the barcode again it just doesn't seem to complete the read and download. I am getting the "ticks" as if it is reading, just no download. I can go back to the PDF-417 barcodes that it was reading before and can still get a read/download. I don't know what this thing is doing... Thanks for the guidance. More research needed..

  • anchorjoe Jan 16, 2009

    I checked the microPDF barcode from page 334 and the scanner was able to scan both the PDF417 and the MicroPDF.. Hmmmm, interesting..

  • anchorjoe Jan 19, 2009

    OK, I tried the "Disable Escape Sequence transmit" option... No good; then I tried the "GLI Escape Sequence Protocol"...No luck. Unfortunately, this part is brand new to the company I work for so this style barcode is also brand new. The scanner still does fine with PDF-417 style, so maybe I will try the sequence again with a different box of parts and see if I can get it to work. Not sure what else to try aside from asking the supplier to use a PDF-417 style barcode, or scan each part individually (100pcs/box)...


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Usually some symbologies are disabled at default.

i think you need the manual and scan the barcode to enable it for scanning.

the links is:

it's chapter 6-191 or page 279 in pdf.

you have to begin with scanning "Start" en end with scanning "END"

becarefull with printing this page and not the whole manual. there are 336 pages.

good luck

Posted on Jan 16, 2009

  • goovy75 Jan 16, 2009

    So when you scan PDF-417 barcodes it's working correctly.

    Then you have 2 posibilities.

    or the barcode you have doesn't seem right


    you need to program the barcode again but with more parameters.

    On page 334 you find a sample barcode of micro pdf 417.

    can you verify if its working like normal?

  • goovy75 Jan 17, 2009

    So the scanner is scanning the micro pdf 417 correctly.

    Now it depends on the barcode how it's parameters are.

    For example you have some barcodes with check digits or without.

    In your case at page 279 you can also configure the micro pdf.

    Disable escape sequence transmit


    gli escape sequence.

    you should try one of these.

    But first of all you need to be sure the barcode you have is correct.

    maybe another product with the same type of barcode.

    If that is working then the problem is the barcode and not your scanner.


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Sir lost my barcode my name is sujajoseph kochithara house p o naduvil kannur

You can try slowing down the output of the scanner. Most barcode scanners have a setting called "inter-character delay". This setting puts a very small amount of time in between the transmission of characters from the scanner to the host PC. See if you can find setting like that in the users guide for the scanner. I did a quick search for the users guide to see what they might call this setting but was unable to find the users guide. I'm pretty sure this scanner has been retired for quite a while now. Probably since PSC was purchased by Datalogic. You may have purchased it new, but most likely it's been sitting around for awhile. If you do find that setting and it doesn't help, see if the scanner supports a USB connection. If it does you'd need to buy a USB cable for the scanner and replace the PS2 cable you have with the USB cable.It could be the adaptor you purchased is causing the problem. If all else fails call Datalogic support. Their website is listed below. Source(s):

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