barcode scanner

  • Thread starter Thread starter john white
  • Start date Start date
J

john white

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I have a machine that has a barcode scanner attached to the serial port
(intermec scanplus 1800 (vt and st)). My problem is that sometimes it works
and sometimes it does not. I cannot figure out what is happening and why it
is doing this. When I check the serial port it seems to be working just
fine. When I move the program to another computer and check the software,
and scanner, it works just fine (which is why I suspect either the operating
system or the hardware on the offending machine).

Can anybody offer any suggestions and or places to I could go to get help?

Thanks........






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john said:
**** Post for FREE via your newsreader at post.usenet.com ****

I have a machine that has a barcode scanner attached to the serial port
(intermec scanplus 1800 (vt and st)). My problem is that sometimes it works
and sometimes it does not. I cannot figure out what is happening and why it
is doing this. When I check the serial port it seems to be working just
fine. When I move the program to another computer and check the software,
and scanner, it works just fine (which is why I suspect either the operating
system or the hardware on the offending machine).

Can anybody offer any suggestions and or places to I could go to get help?
Click to expand...

It probably has to do with the IRQ levels. Remember that COM1 and COM3
both use IRQ4 while COM2 and COM4 use IRQ3. So your problem might be
that you have a modem or something on the other COM port. In the old
days your mouse came in on a COM port, typically COM1. Because a mouse
is always active, it made COM3 unuseable.
 
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