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Home›ZPL Command Matrix›~JO

~JO — Head Test Non-Fatal

A failed head test shows an error and stops printing, but no power cycle is needed (unlike ~JN). No effect on the preview.

Syntax~JO
CategoryPrinter settings

In the preview

This command is a printer setting: the preview recognises it and skips it, because it does not change how the label looks. Its effect shows on the real printer.

Example

~JO

Parameters

This command takes no parameters.

^SZ · ~TA · ^ML · ^MC · ~PS · ^SP · ^ZZ · ~EF

Try this command in the preview