^SR - Set Head Resistance

Overview

The ^SR command sets the printhead resistance value via ZPL, allowing configuration of the printer for different printhead types. Ensures correct electrical characteristics for optimal print quality and printhead longevity.

Syntax

^SR###

Parameters

• ### = Resistance in ohms (488-1175)

Description

• Configures printhead resistance
• Electrical parameter
• Must match printhead rating
• Critical for performance

Examples

Standard Printhead

^SR725

High-Resistance Printhead

^SR1000

Important WARNING

⚠️ CRITICAL:

• Value must be ≤ printhead rating
• Setting higher than rating damages printhead
• Check printhead label for rating
• Verify before setting

Consequences of Errors

Too High

• Printhead damage
• Premature failure
• Poor print quality
• Permanent harm

Too Low

• Poor print quality
• Inconsistent printing
• Possible overcurrent

Correct Procedure

1. Check printhead label
2. Note resistance value
3. Send: ^SRnnn (matching value)
4. Verify operation

Related Commands

• ^JT - Head Test Interval
• ^JW - Set Ribbon Tension
• ~JN - Head Test Fatal

See Also

• Head Test Interval (^JT)
• Head Test Fatal (~JN)