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  • tar_san
  • tar_san
31 Dec 2025 09:47
Replied by tar_san on topic refClockSyncCycles="-1", I got Messages.

refClockSyncCycles="-1", I got Messages.

Category: EtherCAT

Thank you so much.
I had been using N100 PC (or such Atom CPU )  for CNC machine, but this time, I installed LinuxCNC to Dell small PC ( 4 core i5 CPU ) just because of having smaller latency and more CPU power.

I have attached lspci - k output. 
  • endian
  • endian's Avatar
31 Dec 2025 08:39
Replied by endian on topic LinuxCNC S-Curve Accelerations

LinuxCNC S-Curve Accelerations

Category: General LinuxCNC Questions

if calculations are fitted in the servo thread time(which should be 250u as industrial standard) it should be nice to see or try something new ... for 7 phase generator is lcnc waiting many years and it is step to its adulthood

Michel told me to update his code but from my point of view If anybody on anyhardware will want to use it .. it will me close to imposible create a rt stuff for calculations ... I think it has to be splitted to rt and non rt part which will buffering each other for reaching as small as possible servo thread times

I am not expert in that at all...
  • endian
  • endian's Avatar
31 Dec 2025 08:32
Replied by endian on topic Ethercat random jitter fix

Ethercat random jitter fix

Category: EtherCAT

Posting here with some pictures and any stylization is hell, trust me ...

it looks pretty ... reduction of any jitter in the rt system is more than welcome ... pll is very critical stuff for system and it is nice to see its major improvement 

Which driver for network card are you usig for testing it for now? jittering can be produce by generic drivers too i think

I saw it was merged in the master ... we will wait for scott to public new feed or version? 
  • Ozcnc
  • Ozcnc
31 Dec 2025 08:29

Linuxcnc 2.9.7 - Mesa 5i25 with HKD 5 AXIS MACH3 STEPPER I/FACE and 5i25_5ABOBx2

Category: Driver Boards

I've ordered a MESA 7i76U, should get the machine up and running once configured.

I'm going to park this one.
  • grandixximo
  • grandixximo's Avatar
31 Dec 2025 07:44 - 31 Dec 2025 07:45
Replied by grandixximo on topic Ethercat random jitter fix

Ethercat random jitter fix

Category: EtherCAT

github.com/linuxcnc-ethercat/linuxcnc-ethercat/pull/465

new PR with pictures, which I don't want to repost here, look at explanation on github, I'm available for questions. code has been tested, everything should be way better now, and possibly can even use not so good hardware and achieve decent ethercat no grinding.
  • Bendandsend
  • Bendandsend
31 Dec 2025 04:32 - 31 Dec 2025 23:14
MESA 1I76EU Firmware was created by Bendandsend

MESA 1I76EU Firmware

Category: General LinuxCNC Questions

Hi all,

I’m setting up a Mesa 7i76E (Ethernet) with a single 7i76 smart-serial I/O board on Debian 12 / LinuxCNC 2.9 and appear to be stuck due to missing FPGA firmware.

LinuxCNC installs and runs fine, PnCconf completes, and the board is reachable over Ethernet, but field outputs never work:HAL signals link to hm2_7i76e.0.7i76.0.output-00halcmd show pin | grep 7i76 returns nothingdmesg shows no smart-serial / 7i76 detectedEstop / stepgens work, but no field I/O activity/lib/firmware/mesa does not exist, and I can’t install linuxcnc-firmware-mesa because the machine is offline and buildbot appears to be down.

I’m looking for a known-good firmware file for this setup (likely 7i76e_7i76x1.bit), or a working mirror / source for Mesa firmware on LinuxCNC 2.9.

Any pointers appreciated — happy to provide logs if needed.

 Thanks!

Tim.
  • Bendandsend
  • Bendandsend
31 Dec 2025 03:26
MESA 7i76eu Firmware was created by Bendandsend

MESA 7i76eu Firmware

Category: Driver Boards

Hey guys!

Hopefully I'm not banging a beaten drum here. 

I am on the very cusp of finishing my build with the MESA 7i76eu, only to find, like other by the sounds of it, that the boards do not come flashed with firmware. Can someone please help me out? this was discovered when navigating to linuxcnc_2.9.3-amd64.hybrid\firmware to find nothing in the folder. 

Please let me know any further information required, and any assistance would be greatly appreciated!

Happy new years!

Tim.
  • snowgoer540
  • snowgoer540's Avatar
30 Dec 2025 23:57

Is this QTPlasmac Expected behaviour - Cycle Start and Jog disabled.

Category: Plasmac

From what a vaguely recall, i did some test and had no success of pinpointing it.
This sort of issues are lingering on from PlasmaC where it would run several cuts then stop at random and do nothing, requiring stopping the machine and using "run from here" to continue.
PhillC did find the issue but apparently not the exact source of the issue, the Z axis would not retract to set height and remain waiting, did fix it to a certain extent where it was very usable and happening rarely.
QtPlasmaC has another similar issue, where running a program would start, got to pierce coordinates and wait there indefinitely despite Z axis being at the correct height. This happened in PlasmaC about once or twice in a full days work, on QtPlasmaC happens way more often, sometimes 3 to 5 times per sheet.


I have not experienced this behavior on a physical machine, however I can reproduce similar in my QtPlasmaC Simulation environment. In my case, it happens when eoffset movement would exceed the available range of travel (usually in Z). I have to deliberately force what I consider to be unrealistic values (but may not be for every table/setup) to trigger it. If you encounter this again, please check the following HAL pin and report back:
motion.eoffset-limited

If this pin is TRUE, that may explain what is going on. My recent changes to automatically adjust probe height based on material thickness made this more visible. I plan to add some bounds checking in the component with regard to eoffsets, and likely will also monitor the aforementioned pin a general catch-all fault condition.

All this is way past being important, i did voice my concerns during the development about not implementing useless features into it and PhillC ignored most of it to the point that i recused myself from participating anymore, it was disheartening to see:
-PhillC sabotaging his work by implementing useless features, always, always requested by users with a single plasma machine and mostly no or little experience
-my complaints being ignored, while i had over 15 machines in daily use


With regard to your broader concerns, I am not certain which specific changes you are referring to, but many valuable contributions have come from users with only one single table. It is relatively uncommon for contributors to be building machines commercially, and practical feedback from small shops has historically been an important part of Qt/PlasmaC’s evolution.

-my input about the functionality being ignored completely, like : float switch MUST react and stop the machine even during jogging, this has ruined many torches and would have ruined much more if they did not have magnetic holders.


This functionality is in the PlasmaC component. The float switch (along with breakaway and ohmic) inhibits jogging when the machine is Idle.

github.com/LinuxCNC/linuxcnc/blob/2078bd...ts/plasmac.comp#L908

Excerpt (sensor_active is the result of if(breakaway || float_switch || ohmic_detected)):
    /* set jog inhibit if required */
    if(sensor_active && program_is_idle && !(override_jog || state == PROBE_DOWN || state == PROBE_UP)){
        jog_inhibit = TRUE;
    }else{
        jog_inhibit = FALSE;
    }

Appears to be in both 2.9 and 2.10.

-UP/DOWN/ARC_ON LED's on the main screen MUST be usable even while not cutting to check standalone THC's like Proma


I've never seen this request but it would be straightforward to implement. I'll add it to my list of upcoming changes. Initial thoughts for criteria would be Machine On and Idle (not available when the GUI is off, or if the machine is paused).

-seeing all the effort made by PhillC and later you going to waste as PlasmaC and QtPlasmaC got so bloated and so unreliable that i had to stop using QtPlasmaC completely, and actually thinking of slowly moving the remaining PlasmaC machines to my old hal THC stuff, that never fails, ever. Yes, PlasmaC is usable and mostly reliable
-etc etc
-


I disagree with the characterization of PlasmaC/QtPlasmaC as bloated or unreliable. There are multiple real-world installations running successfully, including commercial operations.

Sorry Snowwy and Phill, but i have discussed this before with both of you, even on the phone, so to recap, this is not fixable, must be started over.


I was not trying to pick a fight.

I was not privy to you and Phill's telephone call(s), but in fairness to both Phill and myself, we've both asked you to post a backup of your configuration to try to help pinpoint the root cause, several times. If I recall correctly (not always reliable :) ), I even emailed you on the side asking for it in case you weren't posting in fear of leaking any sort of Intellectual Property.

As a developer it's not that I don't believe you're having an issue, it's that it is insanely difficult to pinpoint a cause and try to fix it when we are unable to duplicate it. This thread, and the changes made to the component are proof that your concerns were not just brushed off.

There are times like the recent PlasmaC issue I closed out where it was, in fact, the user's configuration that was causing the issues...
  • nwallace
  • nwallace
30 Dec 2025 23:32
Replied by nwallace on topic [ Vfdmod ] An easy VFD control over MODBUS RTU

[ Vfdmod ] An easy VFD control over MODBUS RTU

Category: HAL

Unfortunately Vfdmod is no longer maintained and isn't really a good option for new installs. It was a bit of a pain but I switched to mb2hal. Between the documentation and a few examples I was able to figure it out with some trial and error. I suggest switching to that.
  • xenon-alien
  • xenon-alien's Avatar
30 Dec 2025 23:20
Replied by xenon-alien on topic [ Vfdmod ] An easy VFD control over MODBUS RTU

[ Vfdmod ] An easy VFD control over MODBUS RTU

Category: HAL

Hello!
Can anybody help me out with this step by step? (I'm not a Linux user)
I have my old setup, but i don't remember how to add Vfdmod to the LCNC, to see the pins and other.
I have now a Buster system with LCNC 2.9.7 and have a "not found file/directory Vfdmod" message.
All old links not works... How to compile it and from where and which file I have no clue...
  • NWE
  • NWE
30 Dec 2025 23:20 - 30 Dec 2025 23:34

Custom halcomp with nested functions halcompile warning: implicit declaration of

Category: HAL

Progress... so I found this:  forum.linuxcnc.org/38-general-linuxcnc-q...ponent-help?start=10

And that is just what I wish to do; it even works. So now all I need to do is figure out what I did different.
Attached a working example for reference.

Wow, this could get interesting, having to reference hal pins by pointer...
  • NWE
  • NWE
30 Dec 2025 22:49

Custom halcomp with nested functions halcompile warning: implicit declaration of

Category: HAL

I celebrated too quick 

It compiles without a complaint, but trying to load it with loadrt beam_pullmax throws:
beam_pullmax: dlopen: /usr/lib/linuxcnc/modules/beam_pullmax.so: undefined symbol: y_down_slow
  • PCW
  • PCW's Avatar
30 Dec 2025 22:43

7i96S card arrived what setup is recomended

Category: Driver Boards

Yes, just use whatever powers the 7I96S +5V
  • NWE
  • NWE
30 Dec 2025 22:35
Replied by NWE on topic screen blanking

screen blanking

Category: Gmoccapy

Are you using Trixie? This might be something to take to the debian-user mailing list. I currently have that same problem with every single Debian Trixie install, except all these do not have LinuxCNC. My LinuxCNC is still on Bookworm, that did not have that problem.

I've been meaning to raise the issue on Debian-user but have not yet gotten to it.
  • PCW
  • PCW's Avatar
30 Dec 2025 22:32 - 30 Dec 2025 22:40
Replied by PCW on topic Spindle Encoder: Float Precision Issues

Spindle Encoder: Float Precision Issues

Category: HAL

I don't think the precision is an actual issue because for both spindle synchronized moves
and spindle orient, index is used so the spindle angle is zeroed before the operation.
This means that you would normally not see a significant loss of precision in the small
number of turns needed by these operations.

Can the EL5151 provide integer counts? If so, they could be easily converted/dewrapped to
a LinuxCNC hal float (which is 64 bits)
 
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