ZPL commandsPrinter and media
~JCSet Media Sensor Calibration
Not supported by zplkit yet
Media sensor calibration. The printer feeds labels to learn the label length and set its sensors.
Format
~JC~JBReset Optional Memory
Resets (erases) optional memory, on printers that have it.
~JDEnable Communications Diagnostics
Starts communications diagnostics mode, in which the printer prints every character it receives along with its hex value and any communication errors. Useful for debugging what the host is sending.