flexi-bot/docs/marlin/_gcode/M301.md
2023-09-05 20:38:49 +02:00

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---
tag: m0301
title: Set Hotend PID
brief: Set PID values for a hotend.
author: thinkyhead
requires: PIDTEMP
group: thermal
codes: [ M301 ]
notes:
- Requires `PIDTEMP`.
- View current PID values with [`M503`](/docs/gcode/M503.html).
- If `EEPROM_SETTINGS` is enabled, all hotend PID values are saved with [`M500`](/docs/gcode/M500.html), loaded with [`M501`](/docs/gcode/M501.html), and reset with [`M502`](/docs/gcode/M502.html).
parameters:
-
tag: E
optional: true
description: Extruder index to set. Default 0.
values:
-
tag: index
type: int
-
tag: P
optional: true
description: Proportional value
values:
-
tag: value
type: float
-
tag: I
optional: true
description: Integral value
values:
-
tag: value
type: float
-
tag: D
optional: true
description: Derivative value
values:
-
tag: value
type: float
-
tag: C
optional: true
description: C term (requires `PID_EXTRUSION_SCALING`)
values:
-
tag: value
type: float
-
tag: L
optional: true
description: Extrusion scaling queue length (requires `PID_EXTRUSION_SCALING`)
values:
-
tag: value
type: float
-
tag: F
optional: true
description: F term (requires `PID_FAN_SCALING`)
values:
-
tag: value
type: float
examples:
---
Set the values that control the PID loop for a hotend.