Question

Cannot get a bar code scanner to work through Citrix

Asked by: croberds

I have been banging my head on a wall with this one so any help is appreciated.

I have a Percon PT 2000 bar code scanner.  We have software that does dispatching and inventory that is designed to use only this specific scanner.  This scanner has its own memory, it is designed to scan a number of items and then it docks to a PC--it connects via a serial cable--you click an import button in the software, and it imports the Part # and Quantity into the software.  This all works fine in our home office which does not use citrix.  

I have also gotten this to work via an RDP session, I did have to be sure the "Connect Automatically...." to the Serial devices was checked in the RDP Options of the client.

In Citrix the first item and it's quantity get sent over.  Then I just get a transmit error--but it should be noted that this error is in what almost looks like a hyperterminal box that the scanner uses.  I get no errors in citrix or the inventory software.  The scanner has some test software that you can use called PTFER which just sends the scanned items over to a text file.  I get the same results there, RDP works fine, Citrix, first line comes through (i.e. xxxxxxxx, 12) and then the transmit error.

I set up the com redirection in Citrix and TS, and I have run net use com1: \\client\com1:  from a command prompt.  If I type in net use it shows the com is mapped correctly.  I have also examined CTX384590 http://support.citrix.com/article/CTX384590 with no luck.  I did add the info into Wfclient.ini file that was recommended there with no luck.  I left the settings (CommPollWaitMin=0, etc) at the default that was recommended, not sure if I should try changes.

I have already tried troubleshooting this with the makers of the scanner (PT2000) and they say it is set up correctly from what they can tell.  

I have Citrix PS 4.5 Enterprise on Win 2K3 servers.






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Asked On
2008-04-02 at 15:28:00ID23291129
Tags

Citrix

,

Windows 2003 Server

,

Percon

,

PT 2000 Bar Code Scanner

Topics

Citrix

,

Remote Desktop/Terminal Services

,

Network Auditing Software

Participating Experts
2
Points
500
Comments
8

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Answers

 

by: a-mccreaPosted on 2008-04-02 at 15:43:42ID: 21268284

I don't know specifics on your scanner (The ones I use just show up as a USB keyboard), but hope this piece of info helps as I had some headaches trying to tweak serial until I learned this...

In the new Citrix client versions (10 and newer), the serial polling settings have been moved from wfclient.ini to the registry.

Here is where they are
Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\SOFTWARE\Citrix\ICA Client\Engine\Configuration\Advanced\Modules\ClientComm]
"AllowForeignIRQShare"="No"
"COM1IRQ"="4"
"COM1IOP"="0x3f8"
"COM2IRQ"="3"
"COM2IOP"="0x2f8"
"COM3IOP"="0x3e8"
"COM3IRQ"="4"
"COM4IOP"="0x2e8"
"COM4IRQ"="3"
"CommPollWaitIncTime"="20"
"CommPollWaitInc"="1"
"CommPollWaitMax"="500"
"CommPollWaitMin"="0"
"CommPollSize"="On"
"DriverNameWin32"="VDCOM30N.DLL"
"DriverNameWin16"="VDCOM30W.DLL"
"DriverName"="VDCOM30.DDL"
"WindowSize"="1024"


 

by: croberdsPosted on 2008-04-02 at 15:47:13ID: 21268298

Thanks.  We also have the keyboard wedge scanners on our parts counters and they work fine but the handheld one docks with a docking station and uses a serial.  I will look at those registry settings.

 

by: croberdsPosted on 2008-04-02 at 16:17:18ID: 21268437

No luck there.  My settings were the same as yours.  I changed the "CommPollWaitIncTime" to 100 as that was in the CTX article but still have the same problem.

 

by: a-mccreaPosted on 2008-04-02 at 19:07:07ID: 21269252

The settings I posted are just the defaults to show you where it the registry they are.  This kind of thing can be tough, but it you got it working through Terminal Server, you should be able to make it work through Citrix.  You want to make sure there is no software running locally that would grab control of the serial port.  In other words if there are any drivers or little helper apps for that scanner, they should not be running on the client when using Citrix. They may need to run on the server and the server controls the serial port through the mapping.

One more thing to check is if you have any settings that would prevent serial port mapping (Such as Citrix policies or configuation on the ICA listener).  It sounds like it worked briefly so that is not likely a problem.

 

by: croberdsPosted on 2008-04-03 at 07:36:23ID: 21273098

I believe the policies are good, I have no citrix policies in place other than farm settings.  I have a test server with no applications other than our database, I will do some testing today to see what else is running and let you know.  I am thinking it may be some sort of two-way communication that is not going through.  It sends the first line, and then maybe the scanner is waiting for a response to send the next line?

 

by: Steve_SummPosted on 2008-04-09 at 10:49:24ID: 21317276

what type is this in a USB or Serial? and whats the distance (in feet) from the remote terminal to the Desktop

 

by: croberdsPosted on 2008-04-09 at 14:26:07ID: 21319237

It is a serial bar code scanner.  You can use it with a keyboard wedge also, but I cannot get it to work that way either.   It can connect either with a cable connected directly to the scanner or through a docking station.  A manual for it is here:  http://www.posguys.com/download/PSCTopGunManual.pdf

Not sure what you mean by the distance for the remote terminal and desktop, it is not a wireless scanner.  The information is stored in the PT 2000, when you dock it you click an import button from our software and send data from the scanner and it moves it over.  This works fine in a normal setup and in a remote desktop session.  Yet when I try it in citrix with the same server that it works on in a RDP it only sends the first item over.

 

by: croberdsPosted on 2008-06-02 at 14:39:21ID: 21695893

This question is getting old and I haven't been able to find the solution so I am going to give the points to amccrea as those pointers at least gave me more info to go on.  I have decided to go ahead and just let the five users that will need this scanner use Terminal Server and bypass citrix as I could not find another way.

thanks for the ideas.

20120131-EE-VQP-002

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