PathPilot + Mesa 7i76e + DYN4 Servo Drive - Spindle not working

I'm running PP 2.7.2 with a Mesa 7i76e, and DMM DYN4 for a servo spindle which I'm trying to run in analog velocity mode. I'm confident I have the 7i76e<->DYN4 wiring correct, and have 10vdc across the 7i76e TB4 SPINDLE+ and SPINDLE-. I can run the spindle with an external 0-10v pot, so I am confident I have the DYN4 set up correctly. Halshow shows hm2_7i76e.0.7i76.0.0.spinena, spindir, and spinout with appropriate values. Everything seems correct, but I can't get voltage out on 7i76e TB4 SPINDLEOUT.

If anyone has PP working with analog spindle control on a 7i76e could I get a copy of your .ini and .hal files? If not, I'd appreciate if someone could take a look at my attached config files and give me suggestions where this is breaking.

Thank You.

Yes, it is a potentiometer. The 7i76e and DYN4 are wired and powered per the attached. There is 10v between TB4 pins 1 & 3, but no voltage out on pin 2 when spindle commands are given.

Thanks.

Can you post the results of

halcmd show all | grep spin

when LinuxCNC/Pathpilot is running and setup for spindle motion

Attached is the output from "halcmd show all | grep spin".  Pathpilot was running and I'd just issued "M3 S2000" MDI command.

Thanks!

Yeah, if you do not have a watchdog error, and you have ~10V between
TB4 pins 3 and 1 and you do not have about 4V on TB4 pin 2 relative
to TB4 pin 1, It likely the 7I76E has a bad/damaged analog output

(you might check with TB4 pin 2 disconnected to make sure there is not a wiring error)

No watchdog errors, and I still get 0v on TB4 pin 2 with the wire removed. 

If you have a moment, could you check the wiring schematic DMM gave me that I attached to the reply just before your last?  I'd found an error in their TB3<->JP5 portion which they corrected, and it's possible they screwed something up elsewhere.

Also, I have another 7i76e connected to another computer running PP using the same config as my mill, and have powered it up with 24v according to the 7i76_Anschluss pdf, and 10v for TB4. Nothing else is connected to the 7i76e. I used halcmd to set hm2_7i76e.0.7i76.0.0.spinena <== spindle-enable to TRUE, but still can't get a voltage on TB4 pin 2. Is it possible to test the analog spindle output without it being connected to a drive? If so, what do I need to do?

Thank you.
 

Yes, to test the analog output, without a drive
you connect 10-12v between TB4 pins 3 (+) and 1 (-)
You run LinuxCNC and make sure the enable is true,
and that output value scaling and limits make sense, say:

setp hm2_7i76e.0.7i76.0.0.spinena true
setp hm2_7i76e.0.7i76.0.0.spinout 5000
setp hm2_7i76e.0.7i76.0.0.scalemax 5000
setp hm2_7i76e.0.7i76.0.0.minlim 0
setp hm2_7i76e.0.7i76.0.0.maxlim 5000

And you measure the output between TB4 pin2 (+) and TB4 pin 1(-)

The board is set up as you described. I set hm2_7i76e.0.7i76.0.0.spinena TRUE, issued an M3 S5000 command, ran halcmd with "halcmd show all | grep hm2_7i76e.0.7i76 > dump", then checked the variables you listed and got output identical to what you listed.

This is a virgin 7i76e purchased from Mesa a couple months ago, and I get the same results as my other 7i76e. Could the tormachspindle cancer be queering things up? I tried to remove it completely, but PP complains that commanded spindle speeds are out of the range of 0-0.

If you don't have any further suggestions I'll chop out all the tormachspindle stuff I can while still being able to start PP.

Thanks. I really appreciate your help.