Teco FM50 and Mesa 7i77

PCW wrote: Is red AOUT5? if so you are shorting the analog out to ground

No it's black and goes to vi on the VFD.

Was the spindle enabled?
What was the spindle speed?

When you have LinuxCNC running and the spindle
enabled and set to 1/2 speed can you post the results of

halcmd show all | grep spin

(typed in a terminal window)

PCW wrote: Was the spindle enabled?
What was the spindle speed?

When you have LinuxCNC running and the spindle
enabled and set to 1/2 speed can you post the results of

halcmd show all | grep spin

(typed in a terminal window)

Ok I started up the spindle and the speed doesn't change until you hit 0% it stops.
I had to take pictures of the Hal file, my internet isn't working in the garage.

Notice that you are commanding a negative spindle speed?
This will likely not work with the TECO as it probably expects 0 to 10V
_not_ -10 to +10

So to test further, select a positive spindle speed

If the TECO VFD is 0 to 10V you will need to connect the spindle
to the absolute RPM pin in hal rather than the signed RPM pin

PCW wrote: Notice that you are commanding a negative spindle speed?
This will likely not work with the TECO as it probably expects 0 to 10V
_not_ -10 to +10

So to test further, select a positive spindle speed

If the TECO VFD is 0 to 10V you will need to connect the spindle
to the absolute RPM pin in hal rather than the signed RPM pin

Yes it looks like it's 0-10v so do I select a positive spindle speed in the Pncconfig?

For testing just select a clockwise spindle direction:
m3 s1000

in pncconf, uncheck the "Use +- voltage for direction" check box

_BUT_ you may want to make the changes in the hal file so you dont lose any tuning values you have adjusted