Re: Serial port redirection
martin_at_steponesolutions.com
Date: 02/02/04
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Date: Mon, 2 Feb 2004 13:04:07 -0800
Does anyone know if you have to use windows 2003 in order
for this to work, I'm trying to accomplish the same thing
but only have windows 2000 server. Help!
>-----Original Message-----
>Sure. If you use Windows 2003 and the latest rdp client,
and
>enable redirection of COM ports, then you can simply
address COM1
>in your application as if you are running the application
locally,
>and the commands from the application (running in a TS
session)
>will be send to the clients COM port. Completely
tranparent to the
>user / administrator.
>
>The only problem that I have experienced with this setup
was when
>running over a very low bandwidth line. Our application
in the TS
>session sends a signal to the medical device on the local
clients
>COM port, and expects an acknowledgement. Because of the
slow
>connection, the acknowledgement came too late, causing a
time-out
>error in the application. Upgrading the connection solved
this
>problem.
>
>But again: you cannot be sure that it works for you
before you
>have tested the combination of TS, client, application +
medical
>device.
>
> --
>Vera Noest
>MCSE, CCEA, Microsoft MVP - Terminal Server
>http://hem.fyristorg.com/vera/IT
> --- please respond in newsgroup ---
>
>"Matthew Kitchin" <matthewkitchin_public@hotmail.com>
wrote in
>news:#58FlH63DHA.2000@TK2MSFTNGP11.phx.gbl:
>
>> Can the Terminal server initialize a command to the
medical
>> device (that is connected to the thin client)? How does
it
>> identify the thin client? These are dialysis machines.
The user
>> has to select options in our program, and this will
send a
>> specified command string to the dialysis machine via
the serial
>> port.
>>
>> -Matthew
>>
>> "Vera Noest [MVP]" <vera.noest@remove-
this.hem.utfors.se> wrote
>> in message
>>
news:Xns9476E881939CFveranoesthemutforsse@207.46.248.16...
>>> Yes, this *could* work, but no garantuees until you've
tested
>>> it yourself with the specific equipment.
>>> We have a similar setup, with a spirometer connected
to a
>>> serial port (to measure lung capacity; patients breath
into the
>>> spirometer). Works as a charm with redirected COM-
ports.
>>>
>>> --
>>> Vera Noest
>>> MCSE, CCEA, Microsoft MVP - Terminal Server
>>> http://hem.fyristorg.com/vera/IT
>>> --- please respond in newsgroup ---
>>>
>>> "Matthew Kitchin" <matthewkitchin_public@hotmail.com>
wrote in
>>> news:egUotSw3DHA.2612@tk2msftngp13.phx.gbl:
>>>
>>> > I' doing some research as to the best way to
accomplish
>>> > something. We have a bunch of medical clinics around
the US.
>>> > The PCs are using a client server app with the
server in our
>>> > corp. office. We have been looking at moving the
entire app
>>> > to 2003 terminal servers and using thin clients.
There is one
>>> > big issue. The clients connect to a medical device
via serial
>>> > port. This is a necessity. We run our own custom app
and
>>> > write all the code in house, so developing something
isn't an
>>> > issue. My question is regarding the "serial port
>>> > redirection". Is this somehow bi-directional?
Currently, the
>>> > full blown PC has to issue commands to the medical
device
>>> > depending on options selected by the user. Is this
at all
>>> > possible in a terminal server/thin client
environment? Can
>>> > the server actually read data from the thin client
serial
>>> > port, and then send data back from the server
through the
>>> > thin client to the RS 232 port on the medical
device. I know
>>> > their are other options that would allow you to
address the
>>> > medical device directly over Ethernet, but I need to
know if
>>> > the above scenario could actually work or not. Sorry
for my
>>> > ignorance, but this is foreign territory for me.
>>> >
>>> > Thanks for any tips or advice!
>>> >
>>> > -Matthew
>.
>
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