Making 0-10V output work with spindle in HAL

Hi there,

I currently have this breakout board wired up to my CNC: www.aliexpress.com/item/1801916509.html which seem to be ubiquitous over the internet.

My issue is I currently have the 0-10V + GND on the right side of the board attached to my VFD 0-10V/GND inputs.

I also have P17 connected as 'Spindle On' and have connected that to the "FWD" pin on the VFD. When I type M3 and M5 in LinuxCNC, the relay triggers (I can hear it), so that's working fine.

However when I read the documentation regarding 0-10V Spindle Control on: linuxcnc.org/docs/2.5/html/examples/spindle.html I am unable to figure out what the <your DAC pin name> would be. I am unsure what the name of the 0-10V pin would be called in the HAL and all P1-17 ports are accounted for.

Any ideas on how to wire this setup correctly or whether I should be using a different HAL setup?

Very appreciated, thank you.

Can you post your HAL and INI files?

Here you are. Thanks

I would expect your board uses a PWM signal from one of the pins on the parallel port.

Then you would connect that pin in HAL as in the docs:

Oh great, that makes sense.

Where would the PWM then be wired into?

Do you have any documentation for that board?

This is what I have on that front - not the most informative.

Found another bit of information from another vendor and it looks like PWM might be meant to be fed into P1 of the parallel port:



Can you actually reverse the spindle as well or is that "Spindle ON/OFF control interface" just an on/off relay contact?

[edit]
I just noticed that you use pin1 for a motor. Can you move the motors?
Ok looks like its just "Spindle ON/OFF"

Another manual: certainly looks like pin1 is the PWM

enes.ir/shop/image/catalog/Products/EN01...CNCBreakoutBoard.pdf

This board expects PWM on Pin1. Your hal file uses Pin 9.
Make sure to connect the 12-24V on the right hand side of the board and set the jumper for P17 - Motor direction correctly.

Interesting, so are you recommending wiring the P1 PWM to "FWD" on the VFD? Or what's the idea here