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Hi guys,

I have updated from 2.9 to the latest linuxcnc. It is running but two main issues one is the onboard 7i77 enc0 does not exist when it did before and mesaflash does not see the 5i25.

I assume the enc is related to the 5i25 and the 7i77 has old firmware message.

My question is Is it possible that the new mesaflash not see an old 5i25 card? and if not how to we get it updated?

Linuxcnc runs and see the 5i25 and everything seems to work except no enc0.

Thanks,
Bob

Bob
 

This repo is where probe basic et. al. live and it's been added as a convenience for users but its up to the qtpyvcp devs keep their repo current. I suspect its a transient issue from your message as I have not noticed issues here.

If you are not using any qtpyvcp stuff, you could delete the relevant qtpyvcp sources file in /etc/apt/sources.list.d
and do a sudo apt update

Hi RodW, yeah, sure. I am aware of that. The idea is just to get comfortable and experiment withe the Linuxcnc functionalities, configs etc.... of course later when I get all the stuff set up then will be a dedicated computer with real hardware.

qplasmac is a complicated GUI. Normally, it is set up assuming a mesa card using pncconf. 
I think I  would try running up pncconf and build a rough config for a 7i96s. You just need a template for all of the plasma specific pins so pick a mesa pin to use for each. don't worry about scaling the axes etc
Then I would copy the pin layout to your hal file and make sure any plasma  specific stuff in the ini file is copied to your ini file, then replace the Mesa pins with your lcec pins. 

With linuxcnc running open another window and type halcmcd show pin lcec should list all your Ethercat pins and you could probably filter out just the inputs or outputs

Also reviewing recent plasmac configs on the forum may help
I have one but its a very complex one with lots of custom stuff so would not recommend following it github.com/rodw-au/showstopper/tree/master 

In the qtplasmac GUI, there is a couple of fields for THCAD parameters. Set the offset to 0 and scale to 1 and use the actual torch volts. You may need to use mult2 to calculate the full scale voltage. Alternatively, use the scaling field which might be better.

Good luck
 

Yeh, come along and we'll find out together. Dated ot not, adoption by Mazac, Siemens, Fanuc et al does give a platform for industry. BUt collection of data for statistical evaluation is saving some plants a lot of money by preventing unscheduled failures when for example an increase in motor torque is reported. In one case downtime was $1.7m per hour if the plant had a shut down.  

LinuxCNC will run on VirtualBox and so on and this is handy to do basic testing and configuration. There is a limit on what can be done on a sim without real hardware.

The Pi4b was marginal, sometimes requiring a slower servo thread but one guy I know says the Pi5 is flawless on real machines
I'd probably pair it with a mesa ethernet card. A Mesa 7i76eU has 5 axes, 16 outputs and 32 inputs but is extensible beyond that.
Linuxcnc supports 9 axes and 32 motors
Arduino is not useful for linuxcnc
There are several GUIs that support lathes but its always best to start with axis until you get everything functional.
Of course we are friendly!
You can mess with everything!
Check the docs as they list the GUI's available but you can write your own. Some support portrait mode.
I checked the other day, there's is over 1800 pages of docs but I always refer to the online docs.
There are no limits to motor size and it will control Ethercat and analog servo motors not just step and direction.
Linuxcnc is far more flexible than Centroid and is complete as opposed to Centroid where additional upgrades are required.
But it may require more effort from you  because there are probably more decisions you need to make becsause of LinuxCNC's flexibility

Re Youtube not sure on Lathe specific videos but I have a channel which is trying to produce tutorial type material.
This one is designed to be a general introduction describing the various pathways through Linuxcnc 

I'm currently working through a series of videos building a control panel from scratch using a parallel port (3rd one to be released tonight) with a couple more planned. Once fully functional, my plan was to replace the parallel port with other controller options. Sounds like I need to include a lathe walkthrough too!



 

easisest way would be to create seperate configs for each option

What is "the auto tool probe remap"? I mean I know what remap is in general, but it sounds like it is a name of something specific. Is it something one can download from somewhere? A quick googling didn't come back with anything specific.

In the meantime I studied the documentation and the source code a little bit, and I think I now have a clue what's what, and there are multiple ways to achieve tool offsets (G10 L2 vs. G10 L20 for instance). What I was looking for was a simple way and a sequence of click here, enter there kind of set of instructions.

I eventually managed to make the standard tool touchup work. The one where you enter the the tool height in the settings tab, enter the workpiece height in the offsets panel on the main screen, and you just click on the tool sensor button, which will calculate the Z value for the current WCS and sets it with G10 L20 (after touching the sensor with the loaded tool).

Tried again and now thinking some kind of network error.  Will try again later.

Seems likely since that was common on 2 pc's....Did not try live yet...found another hard drive..Thanks!

Not at shop now but pretty sure it is read only...message shows while still running gcode..seems triggered when I pause and change an axis touch off....after a little while all communication stops have to restart..have everything now on a different pc as well as different hard drive (not ssd) only ran for an hour or so.. seemed ok..will check again tomorrow...Actually I got the read only when running the dmesg many times in terminal...that should have nothing to do with mesa right?...so looks like bad ssd...unless I get a surprise tomorrow...i will have to see how to check power supply to mesa I guess...Thanks all for your help!!...this kind of stuff always seems to come when deadline pressures are in play..

Someone with experience in Debian Linux admin probably knows what this means and how to fix it.  Sadly that's not me.

Installed LinuxCNC on a plasma table a few months ago.  Been a few weeks since I had it on due to travel.  Tried to do a package update today and got the following:

Notice: Repository 'xxxxxxxdeb.debian.org/debian trixie InRelease' changed its 'Version' value from '13.5' to '13.6'
Error: The repository 'xxxxxxxrepository.qtpyvcp.com/apt develop Release' no longer has a Release file.

Guessing it's something simple?  Machine works but I like to keep things updated so would like to resolve it.

Thanks! 

-Dave

cnc@linuxCNC:~/Desktop/test_plasma_1$ uname -a Linux linuxCNC 6.12.86+deb13-rt-amd64 #1 SMP PREEMPT_RT Debian 6.12.86-1 (2026-05-08) x86_64 GNU/Linux 
 

PCW wrote:

"Error finishing read" on Mesa Ethernet hardware indicates too many timeouts waiting for returned read data.

Most commonly caused by excess network latency.
 

I got "Error finishing read" even after few hours of stable work without any latency.
I don't know why, but the problem is in kernel version and/or network card driver.
 

Nice, thank you.