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  • grandixximo
01 Apr 2026 02:04
Replied by grandixximo on topic Ethercat random jitter fix
On my setup it takes about 6 seconds to get OP, it's always been like that on my setup I have about 6 servos and 6 IO cards, you should link OP with emergency, you should not let anything be operational till all-OP is on. Without my patches, old Ethernet release there is no delay in OP?

You have to catch the spikes in the scope, scope the servo thread and you joint 0 Ferror or pos-cmd pos-fb

Without a scope reading it's hard to tell what's the issue.
 
  • grandixximo
01 Apr 2026 01:43 - 01 Apr 2026 03:12
Replied by grandixximo on topic LinuxCNC S-Curve Accelerations
@ruediger123
I believe the jerk is not matained, because it is not possible to maintain it with your cycle time and your tolerance, you are purposely settings the machine up to spike, and it will because there is no choice if it follows your thread cycle, if it follows your tolerance, and it follows your set feed, how do you propose this should be fixed? One of these limits should be relaxed, which one?

I don't think I should hard code limits, it should be up to the integrator to setup the machine with proper cycle time and limits according to processing requirements 

@endian @rodw
TP2 in a separate thread should be the medicine that fix our ailments, filtering, NURBS, all will be taken into consideration, it is an active development and testing on our end, not ready to share yet.
  • Donb9261
01 Apr 2026 00:39 - 01 Apr 2026 00:41
Replied by Donb9261 on topic LinuxCNC python
 
  • Donb9261
01 Apr 2026 00:37
Replied by Donb9261 on topic LinuxCNC python
Consider the following gcode lines:

197: G2 X[118.69393*#<scale>] Y[5.37699*#<scale>] I[5.36449*#<scale>] J[4.87005*#<scale>]
198: G2 X[118.27432*#<scale>] Y[8.23889*#<scale>] I[12.16539*#<scale>] J[3.2454*#<scale>]
199: G0 Z3.0
200: G55
201: M5
202: M30

LCNC reads/runs all the way down and stops at G0 Z3.0. And the program never resets. I stat.red_line, stat.motion_line, current_line, and see that motion_line is actually the line it is stuck on. In this case, it would be line 199. After 202: there is an EOF carraige return. I tried this using Axis, and all the others. I get the same result these do. 

M30 should read and rewind to first line in the program which is RS-274 GCODE. But, no matter what I try, nope.

Any ideas?

Thanks,

Don
  • Unlogic
01 Apr 2026 00:31
Replied by Unlogic on topic Probe Active before non-probe move
I only get this error if I forget to plug in my probe cable before probing.

In my case the probe is wired in NC mode (normally connected) just as a safety precaution to avoid crashes.
  • andypugh
31 Mar 2026 21:04
Free Cincinatti Milacron - UK was created by andypugh
A friend sent me this link, it's not my mill. 



 
  • spumco
31 Mar 2026 20:40
Replied by spumco on topic MotionMaster Upgrade
Before you make any decisions, you've got to sort out power.

How many amps of 220v single-phase do you have available for the machine?  This will narrow down your options considerably.

Even if you downgrade the VFD, you may not be able to run the existing drives on single-phase. You may not even have enough amps available with a rotary phase converter or Phase Perfect.

If you do have enough amps to run single-phase with no converter, you need to budget for significantly increase conductor sizes to (and maybe inside) the machine.

So...
How many amps do you have available?
If you don't have many amps, can you stomach the cost & hassle of a service upgrade?
How many amps do the drives require, and what voltage?

I think these will help you determine if you're re-using anything or if this is gonna be a full-boogie replacement where everything electrical comes out and gets replaced with new.
  • susan-parker
31 Mar 2026 20:14
Replied by susan-parker on topic 30 Second timeout before opening and E-Stop button not clicking...
Used gdebi to install dependencies stuff, then dpkg worked... now have LinuxCNC installed.

I am trying to follow instructions as presented, but there is a lot of stuff to get up to speed on and it is difficult (for me) to remember all the various bit n' pieces and in shuffling things around I have probably confused myself - hence the clean install and going back from basics to walk though the installation process from scratch.

This restart is meant to simplify the process, rather than just spinning my wheels.

I will do the Probe-Basic stuff tomorrow... as it's getting later here in the UK and it's time to shut down for the night :)

Thanks for the time and help, it is appreciated. :)
  • grossm5000
31 Mar 2026 20:04
Replied by grossm5000 on topic Differential encoder hard crashes the PC MESA7i77
here are the pictures. the one with the white folding table background is the old one.   

Thank you. I am starting to feel like I really must have missed something obvious here...
  • grossm5000
31 Mar 2026 19:54
Replied by grossm5000 on topic Differential encoder hard crashes the PC MESA7i77
PCW: no luck on the setpci option:

 
  • tommylight
31 Mar 2026 19:51
Replied by tommylight on topic MotionMaster Upgrade
I might not be the best person to reply to this as i absolutely enjoy retrofitting and bringing back to life old machines, so i may be a bit on the "trigger happy" side, but:
-i would try to use the existing drives and motors and VFD/spindle
-seems like those are analog drives, so a Mesa 7i97T would do perfectly fine if you can find one, if not a 7i92T with 7i77 is the same thing, or if those are also scarce a 7i96S with 7i85 and 7i83 should do the same job.
-if you still want to replace the drives, you have two choices in general: EtherCAT or Mesa with normal step/dir or analog servos (do not bother to look at steppers and close loop steppers)
-You will be bombarded by others to choose EtherCAT, i am still avoiding them due to some fuzzy communication issues, but i will test them for sure the fist chance i get.
-For the Mesa/new drives, i would look for "position and velocity" mode drives (analog +-10V and step/dir) and also with encoder outputs (all have encoder inputs or absolute encoders, usually serial ones) so the loop can be closed in LinuxCNC with both types of control, makes life easier during use. Given the choice between analog and step/dir, choose step/dir.
  • PCW
31 Mar 2026 19:42 - 31 Mar 2026 19:57
Replied by PCW on topic Differential encoder hard crashes the PC MESA7i77
Again the memory area is disabled, you might try the setpci option

Also, if Linux runs and accesses the card, you may be able to bypass the mesaflash issue with:

sudo mesaflash --recover --device recover  --write 5i25_7i77x2.bit
  • tommylight
31 Mar 2026 19:34
Replied by tommylight on topic Differential encoder hard crashes the PC MESA7i77
Take pictures of both cards and post them here, do not touch the jumpers.
Did you y any chance set them to "setup mode" or something like that? been to long so i am a bit fuzzy....
  • Lcvette
31 Mar 2026 19:28
Replied by Lcvette on topic 30 Second timeout before opening and E-Stop button not clicking...
If the sim runs probe basic works. Your mqchine configuration was wrong.

As i stated in the fb group. You can i stall the deb with gdebi instead of using dpkg and it will find the missing dependencies. You seem to be making this much more difficult than it needs to be.

Once installed, run the probale basic sinulation from the Linuxcnc application chooser. That tells you definitively if the installation is correct. You should be able to run probasic take it out of e-stop select power Hit The ref all button and watch the Sim work if you can do this the installation is correct.

Now your actual EMCO configuration is wrong it needs to be fixed that will never run the way it is until you go through the machine configuration section of the docs in the pro basic documentation website and make sure that your machine configuration is set up correctly.
  • TAKUYA
31 Mar 2026 19:18
Replied by TAKUYA on topic Ethercat random jitter fix
Like I said, clunks while moving an axis.
No Clunks or weird behaviour in still stand/idle.

I cant reproduce the issue sadly. Happens randomly.
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