M421 - Set Mesh Value

Description

This command is used to set a single Z value for a mesh point in the stored bed leveling data.

Allowed forms are M421 In Jn Zn, M421 Xn Yn Zn (MESH_BED_LEVELING only) or M421 C Zn (AUTO_BED_LEVELING_UBL only).

Parameters


        M421
        
        
        [C<bool>]
        
        [I<int>]
        
        [J<int>]
        
        [N<bool>]
        
        [Q<linear>]
        
        [X<linear>]
        
        [Y<linear>]
        
        [Z<linear>]

`[C<bool>]`	Set the mesh point closest to the current nozzle position (requires `AUTO_BED_LEVELING_UBL`)
`[I<int>]`	X index into the mesh array
`[J<int>]`	Y index into the mesh array
`[N<bool>]`	Set the mesh point to undefined (requires `AUTO_BED_LEVELING_UBL`)
`[Q<linear>]`	A value to add to the existing Z value
`[X<linear>]`	X position (which should be very close to a grid line) (requires `MESH_BED_LEVELING`)
`[Y<linear>]`	Y position (which should be very close to a grid line) (requires `MESH_BED_LEVELING`)
`[Z<linear>]`	The new Z value to set

Examples

Set the Z height in the middle of a 5x5 grid

M421 I2 J2 Z-0.05

Set the same Z height using XY

M421 X100 Y100 Z-0.05

Adjust the mesh point by -0.01

M421 I2 J2 Q-0.01