zpl.tools
CommandsSensor calibration

~JL - Set Label Length

Manually sets label length and feeds blank labels

~JL - Set Label Length

Overview

The ~JL command sets the label length for the printer, feeding one or more blank labels depending on the size specified. Used to manually configure label dimensions or reset label positioning when automatic calibration is unavailable.

Syntax

~JL

Parameters

None

Description

  • Sets label length manually
  • Feeds blank labels
  • Positions media
  • Alternative to automatic calibration

Examples

Set Label Length

~JL

Printer feeds media to set label length.

When to Use

Appropriate

  • When changing label sizes
  • When automatic detection fails
  • For label repositioning
  • Emergency calibration
  • Normal operation (use ~JC)
  • Frequent adjustments
  • Precision alignment

Process

  1. Send ~JL
  2. Printer feeds blank labels
  3. Number fed depends on label size
  4. Printer ready to print
  • ~JC - Set Media Sensor Calibration
  • ^MF - Media Feed
  • ^LL - Label Length

See Also