1. ZT400 Series Industrial Printer User Guide
  2. Diagnostics and Troubleshooting
  3. Printer Diagnostics
  4. Performing a Communication Diagnostic Test
  • ZT400 Series Industrial Printer User Guide
Performing a Communication Diagnostic Test

Performing a Communication Diagnostic Test

The communication diagnostics test is a troubleshooting tool for checking the connectivity between the printer and the host computer.
When the printer is in diagnostics mode, it prints all data received from the host computer as straight ASCII characters with the hex values below the ASCII text. The printer prints all characters received, including control codes such as CR (carriage return). Here is an example of a typical test label from this test.
Communications Diagnostics Test Label
The test label prints upside-down.
To use communications diagnostics mode, complete these steps:
  1. Set the print width equal to or less than the label width being used for the test. See Print Width in Settings for more information.
  2. Set the
    DIAGNOSTICS MODE
     option to
    ENABLED
    . For methods, see Communication Diagnostic Mode in Calibration, Diagnostic, and Other Tools.
  3. Check the test label for error codes. For any errors, check that your communication parameters are correct.
    • FE indicates a framing error.
    • OE indicates an overrun error.
    • PE indicates a parity error.
    • NE indicates noise.
  4. Turn printer power off (
    O
    ) and then back on (
    I
    ) to exit this self test and return to normal operation.