1. ZD411T Thermal Transfer Printer User Guide
  2. Onboard Printer Tools
  3. Running a Communication Diagnostics Test
  • ZD411T Direct Thermal Link-OS™ Desktop Printer User Guide
Running a Communication Diagnostics Test

Running a Communication Diagnostics Test

The communication diagnostics test is a troubleshooting tool for checking the connection 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).
Shows an example of a Communications Diagnostics Test printout.
  1. Ensure media is loaded and printer power is ON.
  2. Set the print width equal to or less than the label width being used for the test.
  3. Press and hold
    Pause
     +
    FEED
     for two seconds. When active, the
    STATUS
     indicator will alternate between green and yellow.
    The printer enters diagnostics mode and prints any data received from the host computer on a test label.
  4. Check the test label for error codes. For any errors, check that your communication parameters are correct.
    Errors show on the test label as follows:
    • FE indicates a framing error.
    • OE indicates an overrun error.
    • PE indicates a parity error.
    • NE indicates noise.
Press and hold
Pause
 +
FEED
 for two seconds or turn the printer power OFF (O) and then back ON to exit this self-test and return to normal operation.