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Ok- so the first thing you suggest to try would be single ended.  Is just setting the jumper DOWN really all I need to do in this case and the axis should (ideally) behave like before? Or will there be more to it?
Well, I will simply try to jumper it to TTL and see if I can run the axis single ended properly or not.

Years ago I remember such "differential converters" on Uhu´s (DC-drives) - these where small and pretty inexpensive parts. But I just knew them for converting A+B channels to A/A* and B/B* , did not need the index in this times....
If I could use such converters to get a differential Index signal out of a single one and so solve the issue I would be fine with it.
Unfortunately I can not simply exchange the encoders as these Fanuc encoders seem to be part of the servo motor and the rear end bearing of the motor.

So I will first try to run the axis with the 7i33 jumpered to TTL, see how it behaves with the single A/B signals and if I can use the index signal then.

Thank you
Sigi

 

Maybe we can combine them?

I need some help here again. I am having a weird issue with my machine. I first thought it has nothing to do with Riocore, but now I am not so sure anymore.

Posted here: forum.linuxcnc.org/12-milling/57122-mach...-programm-repeatable

Oliver or someone with experience, could you explain a bit more what the settings in the Stepper dialog under Step mean?

The Step signal for my machine is inverted. I tried to remove the inversion from the step signal, but than the Stepper don´t move at all. Does that make sense??

Aciera wrote:

Can you post your modified kinemaitics file and your ini file?
 

Here's all my files.  I've included .ini, .hal, and kinematics comp file.  

OK, will get the hal file.

I did most of my work on big iron. Watching what happens with an AC vent hitting the top of a machine with a laser will drive you crazy.
Good luck!

Yes, it’s a rolled screw it has error from the manufacturing process. Thomson claims +\- 0.004 per ft / 300mm.

Though it could be mathed out in the SPU if I was using UCCNC or MASSO.

I'm happy to report that building the 2.9 branch (incorporating the merged PR mentioned above) from the LinuxCNC github solved the problem - the mdi-command-NN pins show up and function as expected.  Thanks for the fix!

-Rob

Nevermind, I forgot how to correctly read and comprehend English.

I would use an RC filter if in a high noise environment

Also not sure from your description,  whats 24V and whats 5V
no 24V signal should be anywhere near 7I92T I/O pins