Sending CHR(7) to cash drawer to Open

25 Oct 2006 3:01 AM

Hector M Banda

Hi all,
How can I send chr(7) thru VB2005 using the parallel port?

BTW This is for a POS system.
Thanks,

-hb

25 Oct 2006 4:46 AM

Mike C#

Sounds like you want to send raw data to the parallel port; maybe treat it
like a printer? Here's a couple of links that might be helpful:
http://support.microsoft.com/kb/138594/
http://forums.microsoft.com/MSDN/ShowPost.aspx?PostID=325408&SiteId=1
http://forums.microsoft.com/MSDN/ShowPost.aspx?PostID=320932&SiteId=1

There's also a section or sending raw data to a printer with VB2005 in this
book: http://www.oreilly.com/catalog/vb2005ckbk/toc.html, although I
haven't read it myself. Might be worth browsing through at the local
bookstore if you have time.

Show quoteHide quote

"Hector M Banda" <hec***@mxlweb.com> wrote in message
news:eu4NnH%239GHA.3348@TK2MSFTNGP03.phx.gbl...
> Hi all,
> How can I send chr(7) thru VB2005 using the parallel port?
>
>
> BTW This is for a POS system.
> Thanks,
>
> -hb
>

25 Oct 2006 6:56 PM

Theo Verweij

Try:
Shell("cmd /c@echo " & chr(7) & " > lpt1:"

Hector M Banda wrote:
Show quoteHide quote

> Hi all,
> How can I send chr(7) thru VB2005 using the parallel port?
>
>
> BTW This is for a POS system.
> Thanks,
>
> -hb
>
>

27 Oct 2006 6:04 PM

Theo Verweij

Just found that the following worked under VB6 - try it in .net (and let
us know if it still works)

Dim fn As Integer
     fn = FreeFile()

     Open "LPT1:" For Output As #fn
     Print #fn, "your data here"
     Close #fn

Theo Verweij wrote:
Show quoteHide quote

> Try:
> Shell("cmd /c@echo " & chr(7) & " > lpt1:"
>
> Hector M Banda wrote:
>> Hi all,
>> How can I send chr(7) thru VB2005 using the parallel port?
>>
>>
>> BTW This is for a POS system.
>> Thanks,
>>
>> -hb
>>

25 Oct 2006 10:16 PM

Dick Grier

Hi,

You can download IONet.dll from my homepage. This would allow you to bypass
Windows and send the data directly. However, there are other ways:

http://support.microsoft.com/kb/154078

for example.

--
Richard Grier, MVP
Hard & Software
Author of Visual Basic Programmer's Guide to Serial Communications, Fourth
Edition,
ISBN 1-890422-28-2 (391 pages, includes CD-ROM). July 2004, Revised March
2006.
See www.hardandsoftware.net for details and contact information.