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Well the THCAD data is in hal so you are nearly there
what have you got set for 
Voltage scale and voltage offset here?
linuxcnc.org/docs/stable/html/plasma/qtp...lasma:parameters-tab
Maybe PCW can see something missing on the night shift...

i'll have a look at it and try to treat the values as single bits

unfortunately i don't have any test-hardware for it at the moment, but maybe i'll get something made.

btw: where did you have your tangbob boards made ? ready assembled or soldered yourself ? if assembled, what does it cost ready made?

greetings,
Olli

I have connected the boards to the machine, powered it, and got the encoders working and calibrated. Probably ought to throw in a smiley here.
However, moving on, I cannot get the emergency stop system to work as I expected.
When I setup a Output 0 with
net estop-loopback => hm2_7i92.0.7i77.0.0.output-00
Confused myself for a while by not having the field power connected, but now it is I expected that after linuxcnc was launched, and the soft EStop button on the screen was clicked followed by the soft power button, I'd be able to latch the COR relay (In the diagram above and yes the air is on)  by pressing the power button on the machine panel. But it doesn't. 
I guess I am missing something again.

So i have done the calculator, and fudged the numbers to get the voltage back around 0v

Confirm - 1/32 setting on board.
Confirm - Plasma is set to 20:1.
Confirm - torch starts and the light on the THCAD 10 flashes faster.

    hi guys I bought a MESA 7I96+THCAD300 for my CNC plasma machine project a couple of years ago. So I don't really remember how and why I chose THCAD300, although I have plasma machines Stahlwerk CUT 70, as far as I know, with ARC pilot type ignition. And if I understand correctly I need THCAD 10? Is there any way to modify or adapt the THCAD300 I have to my needs? Should I buy a new one? If new, what kind?