Axis Minima and Offsets

Adamfilip

Trying to setup my Axis Min and Max, problem i have is that when it homes to X & Y in reality X is -30 and Y is -85 from true bed 0,0 how do i set Duet 2 Wifi (Reprap Firmware 3 Not beta) so that when it homes it will go to the true 0,0 and start from there. and also so the BL touch will probe the true area of the bed

DIY-O-Sphere

Setting M208 in config.g
https://duet3d.dozuki.com/Wiki/Centering_the_bed_or_setting_the_bed_origin#Section_Setting_the_origin_on_a_Cartesian_or_CoreXY_CoreXZ_CoreXYU_printer

https://duet3d.dozuki.com/Wiki/Gcode#Section_M208_Set_axis_max_travel

Adamfilip

Yes M208 I was looking at it before

So if i Set my M208 X-40 Y-85
When it homes it will be a X-40 Y-85
I make it move to X0 Y0

I then set M557 to Define Mesh
M557 X10:300 Y10:300 S20

Since the BLtouch Offset is Y-45 will it compensate for the -45 when probing or do i need to compensate another way for that offset?

nhof

@Adamfilip It will take the probe offset into account when probing.

So in your case, it will try to position the probe at exactly (10,10) for the first probe position.

Since the probe offset is negative, that means your nozzle will be at (10,55) so the probe lines up with the defined grid.