THC plasma configs, with HOW TO.

Hi Tommylight,

Would this be easily setup for 5i25-7i76 stepper system with no FB? I noticed some FB in the thc hal.

Thanks, nice work.

tommylight, thx for your reply.

Cool screens. Almost makes me regret my decision to choose UCCNC instead of LinuxCNC. However, I needed something that I could comfortably implement out-of-the-box without too steep a learning curve and UCCNC met that criteria (It seems like a "cleaned-up" clone of Mach3.). I do intend to explore LCNC going forward, but I have contract obligations to maintain a level of production in my shop.

Regarding your screen, I don't see anywhere a setting for Z response velocity under THC control? Is there no need for this parameter within LinuxCNC?

tommylight wrote:

It should be fairly easy, but i sold my 7i76E so i can not test it.
I did set up a 6i25 with stepgens so it should be similar, but i had not time to test it yes.

Thanks for your work on this project. Will help a tons when I get to the THC.

Just have to figure out which THCad, 10v or 300v.....

Bob

bevins wrote:

Just have to figure out which THCad, 10v or 300v.....

Bob

Bob, I'd recommend the 300v version if you don't have a voltage divider and 10v if you do. (unless you have a > 130 amp plasma cutter that produces > 300 volts!

Also mount the THCAD on or in your plasma cutter as the frequency signal will be much more immune to noise on its trip to the control box....

rodw wrote:

bevins wrote:

Just have to figure out which THCad, 10v or 300v.....

Bob

Bob, I'd recommend the 300v version if you don't have a voltage divider and 10v if you do. (unless you have a > 130 amp plasma cutter that produces > 300 volts!

Also mount the THCAD on or in your plasma cutter as the frequency signal will be much more immune to noise on its trip to the control box....

Thanks rodw.

You use a pyvcp panel for your plasma? Also, you use any external buttons?

I use a modified version of the Gmoccappy plasma screen which has similar features to whats shown on this thread. I have GUI buttons for THC enable and torch enable. The screen handler is customised to parse gcode M68 commands so we can set values from the GUI and from gcode.

A lot of my test cuts have been with an external offsets Axis screen with just cornerlock and auto sampling components I've written with the THC programmed to come on with a simple delay component on arcOK that triggers the torch sample and that in turn enables the THC.

I've documented a lot of my components and research into a single document and my plan is to rewrite them all into a complete set already configured with a easy to include hal file.

Hi



The THC screen now follows the user defined theme. I had to add the plasma.py and plasma.pyc file.



The leds are 2x bigger.
It has the orginal gmoccapy speed panel.

I had to merge the 2 panels to one panel with tabs, to give it something functional.

There is a user defined tap. I advice for users to select Halui i/o and connect them in the plasmaled.hal file, not in postgui.hal
because it is a embedded panel with separate hal file. It will not work with postgui.hal.

Have fun. Attached the zip file list.



To Bevins,

Just have to figure out which THCad, 10v or 300v.....

This forum section is only intended for work with Proma THC.
Proma works fine with Mach3 plasma, the same config's work also fine on Linuxcnc with this forum section THC Toma Hal configuration, available in :

Orginal Axis screen with pyvcp side screen (download from Proma)
Axis screen with glade side screen (the .ui file can be opened in glade and modified by user in graphical way, pyvcp screen is only coded)
Gmoccapy screen with embedded plasma screen (above picture with black theme)

My work is now to go with the exernal offset's branche, testing new thc real time components and scripts to make the perfect
Mesa Plasma Machine. My friend Rodw is very good in this c scripting, making doc's, he is a very awesome men. I am proud to
have someone like him on the linuxcnc forum.

For the future of plasma, laser, thc etc, i will order my first Mesa setup soon, and i will leave the Ltp1 section behind me.

If Mesa will not marry me, it will be a stand alone FPGA project for me during the winter periode. But i will be back after that.