Hi Steve,
Sorry to be unclear - what I meant is that we're not wanting to read
data from barcode scanners into a specific field in the GUI, we just
want to be able to read it and process it as it's scanned.
How we do it will probably be dependant on the type of scanner we use:
we understand USB is relatively unreliable (correct me if I'm wrong) and
IP readers are pricey. We're working in a low resource setting so we
need to look at lower priced readers. That seems to leave us with
RS232/serial readers. But something I discovered yesterday is that you
can get RS232 to Ethernet adapters which might help - or not! Any wisdom
you have here would be appreciated.
Either way, I'm guessing we'll need a separate process that listens to
the reader, whether it be on a serial port or over TCP/IP. I'd be
interested in any advice you can give in identifying the port or other
things we should be aware of, given we're in a Windows environment.
Cheers,
Gary
Sustainable Solutions
On 19/09/2018 18:21, Stephen J. Orth wrote:
Gary,
Hello...
You statement that the scanner needs to be independent of where the user is in
the GUI does not make sense to me, so can you explain what you are trying to
achieve?
We have done quite a bit of scanner work using USB/Wedge readers, RS-232
readers, and IP based readers via web services. Each is unique in how it
works, and has specific implications on how you develop your software.
Maybe you can elaborate a bit more on what you are trying to achieve by using
bar code readers?
Best,
Steve
*********************************************
Stephen J. Orth
The Aquila Group, Inc. Office: (608) 834-9213
P.O. Box 690 Mobile: (608) 347-6447
Sun Prairie, WI 53590
E-Mail: [email protected]
*********************************************
-----Original Message-----
From: 4D_Tech [mailto:[email protected]] On Behalf Of Gary Willetts
via 4D_Tech
Sent: Wednesday, September 19, 2018 7:21 AM
To: [email protected]
Cc: Gary Willetts <[email protected]>
Subject: Re: How to tie 4D to barcode readers?
Hi Tony and others,
Interesting that this subject should come up now, we're also looking at
adding barcode reading to our software. Our application needs to be
independent of where the user is in the GUI and we're looking at low
resource settings so we need to stay away from IP scanners if we can. Which
I guess leaves us with RS232 or serial emulation via USB with appropriate
driver. We're in a Windows environment so GET SERIAL PORT MAPPING isn't so
useful for us I think. Anyone got any pointers on how to identify the
correct port to use with SET CHANNEL (I assume this is the way we have to
go) and general advice with getting this working?
Thanks,
Gary
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