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Cheap chinese magnetic encoder E6B2CWZ6C, 2500 P/R (10000 quadrature counts), spindle speed ~1400 rpm at left and ~60 rpm at right. Halscope shows velocity in rotates per second.
 

This is indeed a much neater method, great! I also solved it quickly and durty with an AND gate. But creating your own component is much nicer in the Hal code.
If I have an evening off, I'll play around with creating a comp.

Which LinuxCNC version? Not that it probably matters as I don't see much difference in this area.

I think that the dialog box is created here:
github.com/LinuxCNC/linuxcnc/blob/master...cripts/axis.py#L1643

With some TkInter stuff in the backgorund that I don't really understand.

But, I don't see where "file not open" comes from. There isn't normally anything in that area of the dialog, I don't think? (unless you know better?) so I can't even find a hint of which file isn't open.

Thanks for your analysis. If you feel so inclined, feel free to add this to the issue tracker: github.com/LinuxCNC/linuxcnc/issues

It would be even better if you could work out a fix

TripleM wrote:

I adapted it for myself, but I just wanted to ask if there was a specific reason why the order was chosen that way.

 

I just hadn't noticed as I don't have a tool-changer. It's that simple. No considered policy decision. 

It's hard to say without testing. There may be improvements to be made with isolcpus and other tweaks too.
If the board you get matches the one have with 25k latency then you should be able to step at about 5kHz (theoretical is max is 40kHz with a 25k base thread, but the differences in motor speed between every 5th cycle and every 4th and so on are more than the motor will follow)
With 4x microstepping 5kHz is about 375rpm at the motor shaft. Or 1800mm/min with a 5mm pitch screw..
You might want to start with software stepping / parport to get going, but it's not the best solution. If you are using a paralle port already then a Mesa 7i90 can be used to massively increase step rate and smoothness, and it adds a lot more IO too. There are other options from Mesa too, as well as from Pico systems and you can also look at the alternative firmwares like Remora for alternative hardware.

The release notes say that Ubuntu 24.04 is supported, and the issue you had looks
like a problem with  the XML project file, so I'm not sure whats going on.

Did you apply the latest patch?

If I get a chance, I can post a 7I96S Efinity 2025.1  project file
( I'll change something so the IDE re-writes the file )