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HI Tommy,

Yes it did. The week before I had a loose screw rattling around in  in my pendant cause a short, which tripped that fuse. I removed the screw and reset the fuse.

Hi Peter,
With only CR8 lighting up (steady) with this 7i84 plugged into its SS cable, and field power disconnect, is this board worth soldering new output IC's onto, or is it pining for the fiords dead?
Cheers,
Mark

Can Phill or Snowgoer have a look at this issue? Sorry I thought it was wider than QTPlasmac but further testing shows it only affects QTP.
forum.linuxcnc.org/9-installing-linuxcnc...-on-buildbot2#324519
This is on a SIM only and I need to upgrade a live config
Thanks

Ooops, this is QTplasmac specific and that is jut opening a Sim already on my PC. But I do need to edit a live sim
 

I adjusted the apt settings so Debian gets  the buildbot2 deb file for LinuxCNC V 2.10. 
The upgrade of linuxcnc was sucessful.
When I open a config from the consiole, a window appears that says 
Updated to V2.10-001.017, Due to Configuration a Restart is required
I open the config and I get the same error
I reboot and I get the same error
I though tthen to check the ini fil to make sure it is not read only. It was so I updated the permisssions to write to it.
But I still can't open any config,  

How do I resolve this?
 

You could get rid of the short and try adding an isolated 24v power supply (Meanwell hdr-15-24) that is connected to the plasma inputs on the thcad. When cutting, nothing will get damaged. The hypersensing component can see full torch voltage when you are cutting  and it does not care... so this should give you the confidence to do it

You might need to and2 the probe signal so it will only turn on when actually probing.

mclien wrote:

rodw wrote:

My recommendation would be to buy a Mesa 7i96s and do it yourself. You will get a better performing machine, probably for the same money without limitations from the parallel port
 

 
Well. do you mean to only use that controller and the mentioned machine or use the Mesa 7i96s an build the cnc hardware by myself?

Build it yourself. For starters, it appears your box uses 24v power. Running them with a 48v power supply from 7i96s will near quadruple motor  torque.
I doubt Linuxcnc is supported via Ethernet.

Here is a quick test where I jumped the shield to the nozzle and then feed voltage from my ohmic into it and then ground the nozzle and the voltage drops like a stone. My thcad-10 is using opto22 and relays to isolate everything so that’s why I have to trigger the ohmic button to send voltage to the nozzle.



youtube.com/shorts/fuJnQ76LXl8?si=pr583jeB8bvqNj0g

tommylight wrote:

QtPlasmaC had a wizard that could convert any working config into a QTP config, no idea if it is still included so might want to wait for the developers to chime in.

Its now built into pnccconf so JT needs to get with the program

Yes, that was one of the original reasons the ohmic test was included. It was intended to check if there was a short like yours before starting a job. It does not happen very often. I only ever experienced it once and I found a bit of rubbish inside the tip,  much like you did. I have thought of setting it up to use one thcad. I'm sure it could be done fairly easily.

Ok thanks I'll look at that!

I suggest you use halmeter ti watch some relevant pins/signals to see what is or is not happening.

for instance use halmeter to watch:
halui.axis.jog-speed (does it change when you press joystick buttons?)
halui.axis.x.plus (does it change when a button is pressed?)
input.0.abs-x-is-pos (does it change when a button is pressed?)

etc.
Then come back here when you track down the problem a little more.

Oh ok so you’re not waiting for the voltage to go to zero to trigger the contact. Your looking at any voltage drop and once it does it’s triggering contact. That make perfect sense to use a thcad and watch the frequency output. Then you could set the trip frequency on the encoder input on your mesa board. I wonder if there is a way to double duty a single thcad-10.

You know I stumbled upon something the other day by accident that could work. I was using my fine cut consumables. And I was testing my retraction to make sure my actual retraction was what the display was stating it was. I held the ohmic button down and moved z down till it stopped from the ohmic trip. But I noticed when it touched I seen a +10v on the cut voltage. I did it agian and it was still there. So I started looking around and found a tiny slag bead stuck up in the nozzle bridging the nozzle to the shield. This was back feeding the ohmic voltage into the nozzle and it was showing up on the cut voltage.

Would there be a way to use this to sense ohmic. I don't know the ramifications to running the nozzle bridged to shield but it had been like that for awhile as I had just been cutting.

However this one here will probably work if I add the missing connector, capacitors and resistors.

PCI ID describes it as 1 parallel port + 2 serial ports (1P2S). 

It shows as a parallel port in dmesg and ioports and when I read the registers they are not empty (and numbers kind of make sense)

I'd check the kernel Configs to see what if any parallel ports are being left out.
Who ever built the kernel may have decided to include support for parallel ports, as we're probably the only old fellas that use them.
You should be able to grep the kernel config file that is in the boot directory.

So you have 2 parallel ports
A legacy on board port at 0x378 and your PCIe on at 0xccc8.

Nice to get responses and not have argue with a user. Thank you very much.

Cheers
Rob