Having worked with Zebra printers a long time ago - we ran into another problem that masked itself as a buffer overrun.  The problem we had was that the printer did not have enough memory.  We changed some labels to a larger font (so they could be read from further away), and we started having trouble with messed up labels, missed characters, etc.  This problem looked to be a communication issue, but turned out to be a severe lack of memory in the printer itself.  Upon ordering more memory for the printers - everything worked OK.  I do not work with Zebra printers anymore (changed companies), so probably would not be of much help in diagnosing problems.


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[]  Wyell Grunwald
[]  Geisinger Health System
[]  Information Technology
[]  Mail Code 30-33
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[]  Danville, PA  17822
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>>> Dave Darnell <[log in to unmask]> Monday, February 12, 2001 1:00:56 PM >>>
My experience with Zebras using software-only flow control XON/XOFF over
PVCs or other network emulation of an RS-232 hardwire is that if you still
have buffer overrun conditions, slow down the connection (at least in the
host-to-Zebra direction.  This is possible in some PVC implementations).  I
have encountered situations where the Zebra's XOFF character does not get
back to the 3000 fast enough to prevent buffer overrun.

-dtd

-----Original Message-----
From: Lane Rollins [mailto:[log in to unmask]] 
Sent: Monday, February 12, 2001 10:35 AM
To: [log in to unmask] 
Subject: Re: Zebra printers

on 2/12/01 9:16 AM, Nizzardini, Al at [log in to unmask] wrote:

> I have a 979 on 5.5 power patch 7. Connect to a DTC72 we have about 60
Zebra
> printers (95's, 105's and 170's). According to HP the DTC does not support
> DTR which the Zebra's need. Is there a work around for this?
>
> Thank you,

I can't remember the model I'm using, it's newer then the 105. It's running
without DTR, just your basic 2,3&7. For flow control it's using xon/xoff.
The other sick and twisted idea I'm playing with is hanging them off of
JetDirect boxes.

-Lane