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Hi all, 

Looking to help a friend do the same thing as this thread, but with a 7i97T for the servos and a 7i78 card for the stepper for Z and THCAD2 for Arc Voltage. 
I could use some help reviewing the hal and ini files to see if I'm on the right track.  I built a stepper machine before with a 7i96s and THCAD2, so have some experience with the setup using PNCCONF.  This is my first attempt at editing the ini and hal files directly.  I combined the basic 7i97 file, with the JT's configurator tool, and the plasma specific info from my 7i96s config.    My main question is how to correctly identify the board names in the files.  In the ini file it shows 7i97T as the board and 7i78 as the card, but I don't see how the 7i78 board gets translated to the hal file?  Ignore the scales, drive values, and pin assignments for most of the signals for now. 

Also, the servos are Cleveland Motion Controls p/n MTE3528-508BG, does anyone know how to determine the encoder scale on these?  May just have to measure it once the system is configured.  

I think you have a wiring fault. All the 105 does is close an internal relay when a valid arc is established. you provide the voltage to that relay and read the output when it opens and closes.I would confirm behaviour with a multii meter before going further.

We can't help until you provide full details of your THC, the way you have integrated with linuxcnc and the connections you have made.

Most people  use a Mesa Ethernet card and Mesa THCAD and not use an external THC.

Please don't duplicate your replies.