Can't get Y2 motor axis to work. 5i25,7i76,g540

I need your help guys.

I cannot get the Y2 axis to work. I wil problaby need one side inverted. I can get it to work using the stepper config and parport. But I want to use THC. So i bought the 5i25 with 7i76. I wired stepgen 00 to X axis, stepgen 01 to Y axis stepgen 02 to Y2, and Stepgen 03 to Z.

here are my files.

Plus I am reading Vol counts from the THCAD card, But getting no volts reading, so no THC. I used JT's files to create mine.

Any help will be greatly appreciated. Thanks!

edit
Looks like the Y2 command is not connected in your hal file

the intention is there:

net y-pos-cmd => hm2_5i25.0.stepgen.02.position-cmd

but y-pos-cmd is not connected to anything

thats what pncconfig generated for me.

I dont know what else to put there. Everything I have tried has not worked yet.
Any Ideas?

Sure, you need to connect the Y2 stepgen's (stepgen2) position command input to motions y axis command output

like this?

net y2-pos-fb <= hm2_5i25.0.stepgen.02.position-fb
net y-pos-cmd axis.1.motor-pos-cmd => hm2_5i25.0.stepgen.02.position-cmd
net y-enable axis.1.amp-enable-out => hm2_5i25.0.stepgen.02.enable

this still did not work.

probably more like

#net y2-pos-fb <= hm2_5i25.0.stepgen.02.position-fb ##commented out since this does nothing
net y-pos-cmd axis.1.motor-pos-cmd => hm2_5i25.0.stepgen.01.position-cmd hm2_5i25.0.stepgen.02.position-cmd
net y-enable axis.1.amp-enable-out => hm2_5i25.0.stepgen.01.enable hm2_5i25.0.stepgen.02.enable

That worked. But I had more problems. Took a while to figure them out.
1. Bad 5i25 out of the box. It would not output Stepgen 02 for nothing. Changed it and it worked.
(Going to try to re flash later)
2. Giop for y2 invert signal given by pncconfig, disables drive. Had to comment out to get it working.
3. Had to figure out how to invert drive by different way. Creating another axis_1 step_scale, renaming it and giving it a minus scale and assigning it to Y2 worked!

Now to tackle the THC not displaying volts, and try to understand the math from analog volts to encoder counts to back to volts and some how scale it right.

Thanks again PCW

Its more likely that the firmware on the 5I25 is not what you expected than a bad card

You can verify the cards firmware pinout with mesaflash:

sudo mesaflash --device 5i25 --readhmid

the 5i25 card was originally installed with 7i78 softwae. i flashed it with 7i76. Maybe it didnt take very good. I will try to reflash it again later. Right now still trying to get the THC to work. I think I have not got the count to scale to voltage correct enough yet.