Duet2wifi RepRap CNC

Hello everyone.
I’m asking for help because I have already exhausted research and assistance from Artificial Intelligence Gemini and CoPilot. The problem: I have an operational CNC machine and decided to upgrade to a Duet2 Wifi controller. Everything worked except the Z-axis movement. It always moves 1/5 of the requested distance. For example, if I request a movement (positive or negative) via Web Control of 25 mm, it only moves 5 mm. If I change steps per mm M92, it produces almost no change. I have checked the Z-axis hardware and everything seems ok. Homing is OK. I have no idea what to do.
My setup: Duet2 Wifi controller, RepRapFirmware for Duet 2 WiFi/Ethernet version 3.6.1., Z axis Threaded Rod Stainless Steel M8x2mm Nema 23 motors (AK23/15F6FN1.8 model). Power supply 12v/ 30A), mechanical endstop switch.

Attached Config.g e Diagnostics.
Noconfirmado550904.crdownload
DiagnosticsM122.txt

I appreciate any help because I really don't know what to do.

I already tested it with another engine and the result was the same.

"M201 X100 Y100 Z2000 ; set accelerations (mm/s^2)"

This seems like a lot of acceleration for a Z, perhaps this is causing z to skip steps

Thanks for the tip.
I reduced the acceleration to 10 and there was no change.

Could it be that I have an unsolvable problem?

Please post at [forum.duet3d.com] where the Duet3D support team will be pleased to help you.

Edit: I see that you have done so.

Edited 1 time(s). Last edit at 11/27/2025 03:04AM by dc42.

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Large delta printer [miscsolutions.wordpress.com], E3D tool changer, Robotdigg SCARA printer, Crane Quad and Ormerod

Disclosure: I design Duet electronics and work on RepRapFirmware, [duet3d.com].

Solved with the help of DC42 and droftart from forum.duet3d.com.
The problem was a corrupted SD card that didn't allow saving value changes. The Z-axis Steps/mm remained at 400 the whole time, when it should have been 1600.
A new SD card solved it.

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Viktor
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