xnaron wrote: I have created a config with pncconf but as you mention above I was unable to map some of the inputs and all of the outputs as the config tool has no plasma options.
It might be helpful for me if I could see someones configuration files as I could compare those to mine and see what is missing.
I attached a zip of my entire config directory.
I believe I need to do the following:
- add ARC OK, Float Switch, and Breakaway inputs
- add torch on/off output
- add debounce for limits, float and breakaway
You'll do all of that when you run configurator
- how do I configure the thcad-5 for ohmic and thc voltage. I did install the ohmic3.comp but not sure where in the config I set this up.
Theres an example for the THC in the user guide:
linuxcnc.org/docs/devel/html/plasma/plasmac-user-guide.html
You'll have to use the link on there to help you calculate your offset and scale.
For the ohmic, you can see how I did mine in the plasma_connections.hal file, but here is the long of the short of what you need to add (note that you need set your own thresholds based on testing, and add your frequencies from the ohmic THCAD):
Code:
loadrt ohmic3 names=ohmicsense
addf ohmicsense servo-thread
loadrt or2 count=1
addf or2.0 servo-thread
setp ohmicsense.thcad-0-volt-freq 139800
setp ohmicsense.thcad-max-volt-freq 953900
setp ohmicsense.thcad-divide 32
setp ohmicsense.thcad-fullscale 5
setp ohmicsense.volt-divider 4.9
setp ohmicsense.ohmic-threshold 23.5
setp ohmicsense.ohmic-low 21.5
setp ohmicsense.mode 1
setp ohmicsense.num-readings 10
net ohmic-vel ohmicsense.velocity-in <= hm2_5i25.0.encoder.01.velocity
net ohmic-true ohmicsense.ohmic-on => debounce.0.2.in
net plasmac:ohmic-enable plasmac.ohmic-enable => ohmicsense.is-probing
#net ohmic:type <= motion.motion-type
#net ohmic:type => ohmicsense.motion-type-in
net plasmac:motion-type => ohmicsense.motion-type-in
net ohmic:power <= ohmicsense.power-on
net plasmac:ohmic-enable => or2.0.in0
net ohmic:power => or2.0.in1
net or-out or2.0.out => hm2_5i25.0.7i76.0.0.output-01
once I have a working config I should run the plasmac config tool. Will the tool change my screen to reflect the plasma specific items and pop up the plasmac window?
Yes, and that's when you add all of the arc-ok, float, breakaway, etc information
Does this sound right? Missing anything?
Maybe, but you're on the right track. I highly recommend reading the user guide, and then reading it again.
On my UCCNC/Mach3 setups with my plasma I did not home the axis. I would move the x/y/z to the origin manually and then zero all. Playing with LinuxCNC it seems to want me to have the axis lengths specified. Do I need to change my workflow or can I still follow the same process and zero all?
You'll find it easiest to add a home switch and home the axis' each time, but you don't HAVE to. you could park Z at the top, X, Y whatever corner you determine to be "home" at the end of each session. One advantage of home switches is squaring up the Y axis, and the home switches will re-square the axis each time you home, and they stay locked together. It wants to know the lengths of travel to set soft limits. At any rate if you don't use switches, when you shut down the machine, if you forget to park it, or are unable, you'll have to manually move the axis' to their home spots each time.
You wont be able to move the axis' easily before you home. And the 2 Y joints wont move without being homed. So hopefully that gives you insight.
