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Haha, you are in luck that someone bothered to print information on that thing.

I would 

• provided nothing damaged on the machine, not touch its electrics. 
• get it running without integrating the spindle into the control. (safe that machine configuration)
• start working on spindle integration with another machine configuration (that way you can take your time to figure it out and still use the machine to cut something)

Did you do your latency test? Keep in mind: Should you have to replace the PC, a PCI or PCIe parallelport card is a means to provide a parallelport for cheap. No need to hunt down a PC with onboard parallel port.

Chances are that you can drive the VFD via PWM directly. (maybe a digital potentiometer is an easy way to do) A 2nd parallel port can be added if there is not enough IO left for the VFD.

 

It's almost a year and a half later. Has anyone updated the probe-screen-ng to Python3 and LinuxCNC 2.9._ ?

It mentions a filename vartokins.py, I don't have that here so I don't know what that is.

There are probably several things. But let's start with the line
"loadusr -W ./lcec_conf ethercat-conf.xml'"
Remove the ./ and it will find the lcec_conf module at /usr/lib/linuxcnc/modules/lcec_conf.so
The filename ethercat-conf.xml on that line must match the file name where you have the config. You attach ethercat-conf_2025-02-26.xml.  If that's the one you use use the line "loadusr -W lcec_conf ethercat-conf_2025_02_26.xml".
You will get error because slave 0 and 2 do not have hal pins with the mentioned names. You had them as basic cia402 in the earlier xml file. Either go back to that or change the pin name in ethercat-conf.xml the "halPin" value there.
There is no slave 3 in ethercat-conf.xml so you will get errors when trying to use lcec.0.3.out-03 in the hal file.
 

Chris,

With ChatGPT's help I think I have found enough examples to have a go at this. I'll report back with how it goes. Thanks for your guidance.

John