^JUS: Save Settings (ZPL)
Writes the current configuration so it survives power off.
Save settings stores the running configuration into nonvolatile memory. Darkness, width, tracking, tear-off, and similar setup values are the usual reason to send it. Send it after a setup session, not after every test nudge, so a bad experiment is easier to abandon by cycling power. The command is normally wrapped in a format start and end. It does not print a label by itself. Saving does not factory-reset the printer. If you need the original defaults, use the factory reload command instead, and only on purpose.
Syntax
^JUS
Examples
Persist the current setup
^XA^JUS^XZ
Send to my printer
Related fixes
See also
Supported models
Source: Zebra documentation