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I just got native homing working with an A6 servo the other day.  I have a system with mixed servo drives (two StepperOnline T7 (aka LeadShine EL7) and one StepperOnline A6).  I had to make some custom mods to both the cia402 and custom homecomp components.

Nothing is really documented aside for some sparse comments, so apologies for that.   I can vouch that these modules do work together for homing on an A6 when configured right.  The components are here:

github.com/tangentaudio/linuxcnc-bridgep...tree/main/components

For reference, this homecomp is based originally on the one from marcoreps, not Rod's.

The LinuxCNC config that has the A6 configured on the Z axis is here.  You might want to check out the .ini, .hal and the .xml for hints.

github.com/tangentaudio/linuxcnc-bridgep...eport-ethercat-pyvcp


 

Your retrofit is progressing nicely.

You are really making a great job of that retrofit.

The overview section of the documentation is a good place to start.  linuxcnc.org/docs/html/gui/qtvcp.html#sec:qtvcp-overview

The way your custom .ui file is loaded when starting LinuxCNC is via this line in your .ini file:DISPLAY = qtvcp <options> <screen_name>Where <screen_name> is the base name of your ui file - in your case you saved "tester.ui" so the basename is just plain "tester".   Generally you want this ui file to be saved in the same folder as the rest of your LinuxCNC config.

You might find it valuable to install one of the QtVcp "sim" demos, which will create a working set of configuration files for a simulated machine with a QtVcp GUI.  It's much easier to experiment and see how the pieces fit together when you're starting from something that works.  You can run or set these up via the screens that you get when you first run LinuxCNC from the applications menu.

I know this isn't the step-by-step guide you were looking for, but hopefully it's some help to get you going.

 

Hi Martin, I have the same VFD and use RS485, all you need is a USB-RS485 converter.
Here is my config and hal file for the communication via MB2HAL: forum.linuxcnc.org/30-cnc-machines/42869...nc-conversion#322586
With the Modbus communication you save some cables and get important load and error information as feedback.