THCAD unresponsive

I'm using a THCAD-300 with a mesa 7i96 in Plasmac gmoccapy. Mode 0. My plasma does not have a voltage divider so I'm using raw voltage. I have hooked the THCAD up according to Tommy's advice here: forum.linuxcnc.org/plasmac/39515-thcad-300-jumper#174265

I have set the scale voltage and offset voltage with this calculator: jscalc.io/calc/NTr5QDX6WgMThBVb


The numbers above make the on-screen voltage readout 42v. If I set the offset to 37 I get a readout of 0v. This is when the torch is not firing. When I do fire the readout does not change no matter what my offset is set to. Also, the Arc OK LED never lights up and when I try to run a simple line cut(made in Plasmac) the torch physically fires but errors out due to not finding the Arc OK.

So I think the THCAD is not sending frequency or Linuxcnc is not reading it. I think my two problems are a symptom of one issue.

I read the voltage across the points I have the THCAD hooked up and I got around 180v with the torch firing in the air.

Thanks.

Is the yellow light blinking on the THCAD?
does it blink faster when a higher voltage is applied?

Check that you have the following in one of your hal files:
and the following in your <machine_name>_connections.hal file:
and that your physical connections between the THCAD and the 7i96 are correct.

I was missing the scale, filter and counter. Thanks for the help. The THCAD is working as expected.

Kale
How did you enter the scale, filter and counter in the Hal file?

kevpsk8 wrote:

Kale
How did you enter the scale, filter and counter in the Hal file?

add it with a text editor