---
tag: m0871
title: Probe temperature config
brief: Configure probe temperature compensation
author: tompe-proj
contrib: thinkyhead

requires: PROBE_TEMP_COMPENSATION
experimental: true
group: calibration

codes: [ M871 ]
related: [ G76, M192 ]

notes:
  - Requires `PROBE_TEMP_COMPENSATION`.
  - Values at index zero are constant (zero).
  - Compensation values are stored in µm (micrometers).
  - Use [`M500`](/docs/gcode/M500.html) to save the values to EEPROM.

parameters:
  -
    tag: V
    optional: true
    description: Z adjustment value, in micrometers.
    values:
      -
        tag: µm
        type: int
  -
    tag: I
    optional: true
    description: Index at which to store the given Z adjustment value.
    values:
      -
        tag: flag
        type: bool
  -
    tag: B
    optional: true
    description: Store the value `V` as the Z adjustment at index `I` for the Bed.
    values:
      -
        tag: flag
        type: bool
  -
    tag: P
    optional: true
    description: Store the value `V` as the Z adjustment at index `I` for the Probe.
    values:
      -
        tag: flag
        type: bool
  -
    tag: E
    optional: true
    description: Store the value `V` as the Z adjustment at index `I` for the Extruder.
    values:
      -
        tag: flag
        type: bool
  -
    tag: R
    optional: true
    description: Reset all Z adjustment values to factory defaults (zero).
    values:
      -
        tag: flag
        type: bool

example:
  -
    code:
      - M871 ; print current values
      - M871 R ; reset all values factory default (zero, effectively disabling compensation)
      - M871 P I1 V-5 ; set probe compensation value at index 1 to -5µm
      - M871 B I2 V20 ; set bed compensation value at index 2 to 20µm
      - M871 E I4 V-13 ; set extruder compensation value at index 4 to -13µm
---

Read/write probe temperature compensation values. Values for bed and/or probe can be calibrated using the [`G76`](/docs/gcode/G076.html) command.