Probe offset

tecno

It looks like there is a bug with probe offset.

G31 P50 X45 Y8 Z0.510

in bed.g

G30 P0 X15 Y200 Z-99999

Running this results in a violent overrun banging X on end switch.
Am I understanding this wrong and have faulty config.g / bed.g ?

Board: Duet 3 Mini 5+ (Mini5plus)
Firmware: RepRapFirmware for Duet 3 Mini 5+ 3.4.3 (2022-10-05)
Duet WiFi Server Version: 1.27

Phaedrux

What is your axis range in M208?

tecno

; Axis Limits
M208 X0 Y0 Z-3 S1                             		; set axis minima
M208 X340 Y400 Z450 S0                       		; set axis maxima

tecno

G30 P0 X20 Y200 Z-99999

This runs OK but why? Should not G31 line offset be in the calc?

Phaedrux

I don't think G31 applies when you define the point yourself. Same is true for any G30, you must position the probe yourself.

tecno

@Phaedrux
OK, a bit confusing as I can not see any advise on how to apply offset.

Thanks for looking into this.

dc42

@tecno for a discussion of offsets, see https://docs.duet3d.com/en/User_manual/Tuning/Defining_tool_and_Z_probe_offsets. Note, a plain G30 command without XY parameters probes at the current XY location.