User Manual

94 R4Mplus User Guide
Troubleshooting
Communication Problems
Communication Problems
Table 17 • Communication Problems and Solutions
Issue Potential Problem Recommended Solution
The printer does not respond
to label requests. The Data
light does not flash.
The communication
parameters are incorrect.
Check the printer driver or software
communications settings.
Confirm that you are using the correct
communication cable. See Cable
Requirements on page 14.
Using the front panel, check the
protocol setting. It should be set to the
default none. See PROTOCOL
on page 59.
Ensure that the correct driver is being
used.
Several labels print, then the
printer skips, misplaces,
misses, or distorts the image
on the label after a label is
sent to the printer.
The host is set to EPP parallel
communications.
Change the settings on the computer
host to standard parallel
communications.
The serial communication
settings are incorrect.
Standard RS-232 cables are appropriate
for lengths under 50 ft. (15.2 m); RS-
422 and RS-485 cables allow serial
transmission up to 4000 ft.(1.2 km).
Check cable length and shielding, and
confirm the appropriate RS-232, RS-
422, or RS-485 setting is being used.
Check the printer driver or software
communications settings.
A label format was sent to the
printer but not recognized.
The DATA light flashes but
no printing occurs.
The prefix and delimiter
characters set in the printer do
not match the ones in the label
format.
Verify the prefix and delimiter
characters. See Selecting Prefix and
Delimiter Characters (next three
parameters) on page 61.
Incorrect data is being sent to
the printer.
Check the communication settings on
the computer. Ensure they match the
printer settings.