Centroid Community CNC Support Forum

Yes it would work if the servo parameters are set up according to Acorn settings.

Uwe

If they have a position mode with step and dir signals they are ok.

Do you have a manual of the drivers?

Uwe

ScullMFG wrote: ↑Thu Mar 20, 2025 12:42 am Maybe is someone who has SSV active in their PLC willing to share it with me so I can make the changes myself?

- Andy

Sure.

PLC of my lathe with AcornSix

Search for FRV and SRV

Should not be a big job to copy the lines and timer definition to your PLC

Uwe

Hi,

you have several problems.

A lot of communication resends could indicate a noise issue.

Backlash 0,15 and 0,2mm must be fixed mechanical

3.2mm pitch on X and Y is not common, are there ball screws and a belt reduction?

The old steppers are weak, I would use at least 4Nm XY and 12Nm Z

Uwe

Do not use the Ether1616 for a probe, it is too slow. Use the onboard inputs.

Uwe

Main difference using a dial indicator vs probe is that the CNC knows where to stop with the indicator, with a probe it stops if the input is set.

I would try another probe and/or another input.

Uwe

You can use the CamCut mobile App.

Drilling too small will cause more problems than drilling a little bit larger.

https://www.camcut.fi/en/support/camcut-mobile-app/

Uwe

Some pictures of the machine, especially the steppers and how they are mounted on the machine would be helpful too.

Acorn is very reliable, I suppose the steppers are loosing steps, or there is something slipping.

Uwe

Hi Richard, I also recommend tap forming, no chips, faster, better threads. 3XD is no problem in one go, I use these for Aluminum: https://webnavigator.guehring.de/en/tools/9080800060000?useCaseGroupId=2&useCaseId=7&executionId=1&threadingType=1&threading=M6&processingDepth=15&am...

Hi Richard, I have no clue what is making this deviation. Your videos with dial indicator are looking ok. I would get a cheap probe like this to compare https://de.aliexpress.com/item/1005003498231826.html?spm=a2g0o.order_list.order_list_main.122.66e95c5fYtCwwK&gatewayAdapt=glo2deu I have one al...