Set Media Sensor Calibration
The ~JC (Set Media Sensor Calibration) is used to force a label length
measurement and recalibrate the media and ribbon sensors.
NOTE: In continuous mode, only the media and ribbon sensors will
be recalibrated.
Enable Communications
Diagnostics
The ~JD (Enable Communications Diagnostics) instruction initiates a
diagnostic mode that produces an ASCII printout (using current label
length and full width of printer) of all characters received by the
printer. This printout includes the ASCII Characters, the HEX value
and any communication errors.
258 ZPL II COMMAND REFERENCE
~JD
^J C
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