Zoffset ignored duet wifi bltouch

Phaedrux

@Caveman said in Zoffset ignored duet wifi bltouch:

ok changed m588 now bed position suddendly changed?

What do you mean by that?

Caveman

I moved m558 above G31, now as I ask ;

bed.g
; called to perform automatic bed compensation via G32
;
; generated by RepRapFirmware Configuration Tool on Tue Oct 09 2018 13:27:56 GMT+0300
;G28 ; home all
G30 P0 X20 Y150 Z-99999 ; probe near a leadscrew, half way along Y axis
G30 P1 X240 Y150 Z-99999 S2 ; probe near a leadscrew and calibrate 2 motors
G30 P0 X20 Y150 Z-99999 ; probe near a leadscrew, half way along Y axis
G30 P1 X240 Y150 Z-99999 S2 ; probe near a leadscrew and calibrate 2 motors

But it now probes @ x-8.5 and x211,5 and also printing has moved a little to the left.
This happened after moving M558

Phaedrux

Well your probe offset wasn't being applied before.

Caveman

true but purge line now happens outside of bed and prints to the left. So something needs changeing i guess

Phaedrux

I suggest you revisit your M208 values. 0,0 should place the nozzle at the front left corner of the printable area, measure the distance to the ends of travel from there.

Easiest way to do that is to first send M564 H0 S0 to allow you to move the print head anywhere and without needing to home. Then manually place the nozzle at the front left corner. Then send ~~M92~~ G92 X0 Y0 to force the current position and then jog the print head to the extents of travel and note the values in the position display for use in M208. Careful not to ram into the frame.

Also be sure to measure your probe XYZ offset as described here: https://duet3d.dozuki.com/Wiki/Test_and_calibrate_the_Z_probe#Section_Measuring_Probe_X_Y_Offset

With those re-established you may need to revisit any existing G1 positional moves you may already have in your macros to make sure they actually go where you want them to.

Caveman

Thanks I wil do that after print is finished. Thanks a lot for the help!!!

Caveman

@Phaedrux strange I have tried this but with m92 command the x axis does not change. It stays the same.

Phaedrux

@Caveman said in Zoffset ignored duet wifi bltouch:

m92

I'm sorry, that should have been G92, not M92.

G92 forces a position. M92 is for steps per mm.

Caveman

So do I need to save the new 0.0? I managed to get it to 0 but when I start a print it changes back.

Caveman

Do I need to move head in every direction and check values?

Phaedrux

Well when you find the values you'll need to modify the M208 commands in config.g to make them permanent.

Caveman

Thanks I have it perfect now. Thanks a lot. No I just make sure all the coordinates in macros and so on are in the correct place and all is good.