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Si la resistencia es de 2,4 Mohm la medi para asegurar pero si le doy la vuelta a los cables del multimetro me da -145V en negativos 

todos esos valores son cortando el material 

If the external resistor value is correct (2.4M) that's not
possible. It may be that there is enough RFI/EMI that
the voltmeter is malfunctioning.

Ahora otra pregunta yo mido con un multimetro la salida del plasma la que va al thc lo mido en DC y me da mas de 600V que es en maximo de mi multimetro asi que no se cuanto exactamente, tengo una resistencia de 2,4 mohm en serie en el “negativo” si mido después de la resistencia me da 104V.

Que tengo que hacer?

Locales must be set to UTF-8 for LinuxCNC to work properly, be it for wizards or for some of the GUI's.
Probably should be mentioned in the docs, preferably at the very beginning, but not much of an issue from what i read on this forum.
Google "setting locale utf-8 debian", quite easy to do.
Hard to know if it works always for all the languages included.

Era el idioma muchísimas gracias por fin se solucionó 

Good catch. I just saw the 0 on the encoder port and assumed it was the same issue. I don't know about the translations either...I tried to take a quick look at the source but it immediately became clear I don't have enough understanding of it for it to be quick. Hopefully snowgoer540 can provide some guidance.

I don't think there is a pin 0 issue as this is a 7I96s and the encoder is on pins
27,28,29

Language may be the issue, I don't know enough about locales and translations
but do all strings in the source get translated? (en_US):

                    if "Arc Voltage" in pinchanged:
                        self.d._arcvpin = pin
                    elif self.d._arcvpin == pin:
                        self.d._arcvpin = None
                    if self.d._arcvpin and self.d.frontend == _PD._QTPLASMAC:
                        self.p.page_set_state('thcad', True)
                    else:

 

Hi, I had the same issue and there was a problem with pncconf displaying the THCAD page if the pin number was 0.  I made a pull request that has been merged a couple of days ago into 2.10 master.  You could either use an input that doesn't have a pin number of 0 or upgrade to the 2.10 master.

Hope this helps.

The THCAD support was added to pncconf about 3 years ago so definitely in 2.9.4

The THCAD screen should appear on the next screen after the one where
you set the stepgen/encoder functions.

he vuelto a instalar linuxcnc ultima version estable y nada sigue sin darme la option del thc
porque¿

Si

I'm using 2.9.4

Did you select "Arc Voltage" on the encoder menu on the TB1/TB2 tab?
 

Me podrías decir por favor que versión de Linux CNC tienes y si esta en Debian 12 o si no en cual y vuelvo a instalarlo todo a ver si me funciona gracias

Uso qtplasmac pero no me sale esa opción para thc . No se por que instale linuxcnc 2.9 master puede ser por eso?

O tengo que cambiar el firmware lo tengo en 7i96s_d quizás poner 7i96s_dlp resolveria que me salga esa opción de verdad no consigo configurarlo 

If you use pncconf, it should setup the THCAD stuff for you.

This needs the QTPlasmaC GUI:


 

The encoder option to be "Arc Voltage"


 

Then you will get the THCAD setup page: