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It should have said you can not control. Sorry.

if Mesa or ethercat,  disable energy efficient Ethernet with commands for your NIC (Intel/Realtek) and consider adjusting IRQ for the network card to prefer the core the servo thread is running one. There is a script somewhere on the forum here.

andypugh wrote:

I really thought we had a newer version than that on Bookworm, but the package lists suggest otherwise. 

[/quote]
You do. Looks like the OP is using the version included in bookworm and has not used the 2.94 ISO
But that's not an issue. Just follow the instructions in the 2.94 docs under getting Linxucnc, section 7.

But also Debian Trixie should be released in the next couple of days. Once that happens an early adopter can do a
sudo apt dist-upgrade
should install Trixie and upgrade to 2.9.4

Its quite possible to get linuxcnc and Ethercat working with secure boot. The instructions you followed have a spoiler to open  explaining how to do it. The method came from the ethercat guys and I have tested it as working.

@Rüdiger
May this be a result of the missing (?, the screenshot is hard to read) Q parameter? From the   readme :

Important Runtime NotesWhen using the S-curve trajectory planner, always use the 

G64 P[x] Q[x]

 command combination. If 

Q[x]

 is not specified, the interpreter may:

1. Remove or filter out small segments.
2. Convert arc segments into line segments.

A standard input should look like this:

G64 P0.01 Q0.0

You can do it! It will depend on you GUI. some may even have the ability to program a slider. Have a browse in the linuxcnc docs as its all documented
 

joshualee777 wrote:

Hello, I reset the device to factory defaults as you advised, but the "Amplifier Fault" error still persists. Is it because the DC setting is not set correctly? I'm wondering if you have any other advice.

The only Amplifier faults I have seen with steppers is when the drive or the motor overheats (Non-ethercat).
With Ethercat it could be a following error reported by the drive throwing this. There is a Fault code for the ETC60 so bring that out in your xml file. It can take  a bit to decode as it is a bitmapped field. Display the field in halshow. Convert it to hex or binary which Google will do for you and refer to the docs.