User guide

Troubleshooting
Communications Problems
57516L-001 Rev. 1 10/12/2004 170PAX4 User Guide 97
Communications Problems
Table 12 identifies problems with communications, the possible causes, and the recommended
solutions.
Table 12 • Communications Problems
Problem Possible Cause Recommended Solution
A label format was sent to
the print engine but was not
recognized. The DATA light
does not flash.
The communication
parameters are incorrect.
Check the print engine driver or software
communications settings (if applicable).
If you are using serial communication, check the
serial port setting in the front panel menu. See
Set Serial Communications on page 66.
Make sure you are using the correct
communication cable. See Data Cable
Requirements on page 25 for the requirements.
Using the front panel controls, check the
protocol setting. It should be set to
NONE . See
Set Protocol on page 67.
If a driver is used, check the driver
communication settings for your connection.
A label format was sent to
the print engine. Several
labels print, then the print
engine skips, misplaces,
misses, or distorts the image
on the label.
The serial communication
settings are incorrect.
Ensure that the flow control settings match.
Check the communication cable length. See
Data Cable Requirements on page 25 for
requirements.
Check the print engine driver or software
communications settings (if applicable).
A label format was sent to
the print engine but was not
recognized. The DATA light
flashes but no printing
occurs.
The prefix and delimiter
characters set in the print
engine do not match the ones
in the label format.
Verify the prefix and delimiter characters. See
Set Format Prefix Character on page 68
and Set
Delimiter Character on page 68 for the
requirements.
Incorrect data is being sent to
the print engine.
Ensure that ZPL II is being used.
Check the communication settings on the
computer. Ensure that they match the print
engine settings.
If the problem continues, check the ZPL II
format for changed ^CC, ^CT, and ^CD.