Specifications

Print Rate
The ^PR (Print Rate) instruction determines the media speed during
printing and the slew speed (feeding a blank label).
The printer will operate with the selected speeds until the setting is
reissued in a subsequent format or the printer is turned off.
The print speed is application specific. Since print quality is affected
by media and ribbon, printing speeds and printer operating modes, it
is very important to run tests for your applications.
306 ZPL II COMMAND REFERENCE
^PR