^LT
Label TopPreview: partialOffsets all following field origins vertically, providing a format-wide up/down print adjustment in dots.
Syntax
^LTaParameters
| Parameter | Description and accepted values | If omitted |
|---|---|---|
| a | Vertical shift in dots; positive moves down and negative moves up.-120 to 120 dots from the top | 0 |
How it works
^LT changes the vertical placement of later fields. It is commonly used to compensate a small top-of-label registration difference after the media and sensor calibration are already correct.
The value is in dots, so it must be scaled for printhead resolution just like ^FO coordinates. A positive adjustment moves the image down; a negative adjustment is appropriate only after checking that it will not clip the top of the printable area.
^LT is a global adjustment for the format. When only one address line is too low, edit that field's coordinate instead of moving every barcode, graphic and text line beneath it.
Example
^XA
^LT30
^FO40,30^A0N,40,40^FDShifted down^FS
^XZRendering…
How the preview on this site handles it
The preview applies ^LT to the vertical position of later fields. It does not simulate media calibration, sensor timing or printer-specific permanent settings.
Common mistakes
- Using ^LT to hide a calibration problem. The apparent correction can fail as soon as media or darkness settings change.
- Moving the label up until the first field is clipped. Check the true printable top margin after a negative adjustment.
- Forgetting that the number is dots. Recalculate it when the template moves from 203 dpi to 300 dpi.