1. ZT400 Series Industrial Printer User Guide
  2. Diagnostics and Troubleshooting
  3. Alerts and Error States
  4. Troubleshooting
  5. Communication Problems
  • ZT400 Series Industrial Printer User Guide
Communication Problems

Communication Problems

Use this information to identify communication problems, the possible causes, and the recommended solutions.
Problem
Possible Cause
Recommended Solution
A label format was sent to the printer but was not recognized. The DATA light does not flash.
The communication parameters are incorrect.
Check the printer driver or software communications settings (if applicable).
If you are using serial communication, check the serial port settings. See Port Settings.
If you are using serial communication, make sure that you are using a null modem cable or a null modem adapter.
Check the printer’s handshake protocol setting. The setting used must match the one being used by the host computer. See Port Settings.
If a printer driver is used, check the driver communication settings for your connection.
Reinstall the printer driver. See Installing the Drivers.
A label format was sent to the printer. Several labels print, then the printer 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 General Specifications for requirements.
Check the printer driver or software communications settings (if applicable).
A label format was sent to the printer but was 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 Control Character and Delimiter Character in Language Settings.
Incorrect data is being sent to the printer.
Check the communication settings on the computer. Ensure that they match the printer settings.
If the problem continues, check the label format.