That is one reason I have not posted anything about my progress over at Plasmaspider, maybe when I have an operational Linuxcnc controlled table. Then I started paying attention to the amount of support require by most table builders to get Mach up and running and decided I didn't want anything to do with that. I had originally set out to produce a package that would allow the control of a full featured plasma table that didn't rely on proprietary hardware, well almost I think the Mesa cards are a good deal at their price point. Oh by the way I am NOT a software professional and I am sure there are errors that I haven't found yet in these files. Now this still leaves the THC height hold function as a user space item, I will post the the modifications to a component and the HAL connections for this in my next post. Now this much will get value changed on your GUI and in controls if it already has the adjustments, buttons or labels in place (notice no editing of the Glade file required to add this). # if real time control of height hold is desired then 1X and 2X need to beĭef on_new_command_from_file(self, hal_pin, data = None): #this function is used to decode command from gcode file So to start things off we need to get the command value from the gcode interpreter for use by other parts, this is in one of my HAL files: I have tested this using MDI commands and monitoring the results on my GUI and halshow. I will post this as series of code snippets because my files are large and very messy which will lead to much confusion. This uses M67 or M68 E0 Qxxxx to send over the command and motion.analog-out-0 to get it from the gcode interpreter. I choose this route because there are tried and tested Sheetcam posts that use it.

There are probably errors in my interpretation of what is happening. I couldn't find a specification document for this so I reverse engineered it from Sheetcam post processors that incorporate it and vague manual pages. This is not new ground, CandCNC has this for their old Mach 3 systems and their new Command CNC systems. I have been working getting cutting settings from gcode part files and into a working plasma setup that uses the new external offsets code.

Sheetcam tool library torchmate