5i25+7i76 Spindle and Encoder Setup

You have a typo in the HAL file.
The error is

HAL: ERROR: function 'abs.spindle_output' not found

caused by

loadrt abs names=abs.spindle,abs,spindle_out

You are loading three abs components: abs.spindle, abs, spindle_out
I think you want
loadrt abs names=abs.spindle,abs.spindle_out
ie, a dot not a comma.

Actually no absolute component is needed at all

the spindle out voltage should be controlled by these statements:

net spindle-vel-cmd-rpm-abs => hm2_5i25.0.7i76.0.0.spinout
net motion.spindle-on => hm2_5i25.0.7i76.0.0.spinena
net spindle-ccw => hm2_5i25.0.7i76.0.0.spindir
net spindle-vel-cmd-rpm-abs <= motion.spindle-speed-out-abs

Note that you are using a quite old version of pncconf (with many errors).
At the very minimum I would update to the latest version of LinuxCNC (2.7. and start again

Also you will get additional errors when you fix the current batch because you have some power
issue that is preventing the 7I76s field I/O section from running (missing field power?)

OK,
I've updated LinuxCNC to 2.7.8 from 2.7.0 and rerun PNCconfig to generate new HAL and INI files. I no longer have any LinuxCNC launch errors.

I currently only have A, B, and Index encoders wired single ended onto the 7i76 board for the spindle. Do I need to have SPINENA+, and SPINENA- wired before I can see spindle speed feedback within LinuxCNC and get an Spindle Output signal from the spindle controller? (Currently there is no speed spindle speed display visible anywhere within LinuxCNC). If so, do I simply jumper SPINENA+ (+6V) to Spindle+ and SPINENA- (0V) to Ground? If I wanted to enable the spindle by pulling to ground, how do I wire that onto the 7i76 and what do I need to change on my HAL file?

I appreciate the assistance.

sg wrote: I currently only have A, B, and Index encoders wired single ended onto the 7i76 board for the spindle. Do I need to have SPINENA+, and SPINENA- wired before I can see spindle speed feedback within LinuxCNC and get an Spindle Output signal from the spindle controller?

No. Those outputs are provided for the purpose of turning the spindle drive on and off.

Perhaps surprisingly there is no spindle speed display built in to the Axis Gui.

For a temporary display of spindle speed (in revs per second) you can open a halmeter and look at (typically) motion.spindle.speed-in or (the signal source) hm2_5i25.0.encoder.0.velocity

To have a permanent spindle speed display you can add a PyVCP or GladeVCP panel to the GUI.

Oh, I see. SPINENA+ and SPINENA- are output signals for activating and deactivating the Spindle Drive. (Please correct me if I'm wrong.) What button and/or function in LinuxCNC activates this signal?

I also can't vary the Spindle Out signal through LinuxCNC. It seems to be stuck at 0V despite me trying to increase and decrease the spindle speed via LinuxCNC. Any idea what may be causing this?

Regards,

To get an output from the 7I76 analog spindle output, (7I76 SPINDLE OUT) you need

1. +5VDC to +15VDC on SPINDLE+, VDC common on SPINDLE-
2. hm2_5i25.0.7i76.0.0.spinena must be "true"
3. hm2_5i25.0.7i76.0.0.spinout must be set to some detectable percentage of hm2_5i25.0.7i76.0.0.spinout-scalemax
4. hm2_5i25.0.7i76.0.0.spinout-maxlim and hm2_5i25.0.7i76.0.0.spinout-minlim must be set so they are not bounding
hm2_5i25.0.7i76.0.0.spinout to a small number