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  • redek3
30 Dec 2025 14:44
Replied by redek3 on topic Retrofitting a 1986 Maho MH400E
   Hi,
I have done a similar retrofit. My machine is a Polish AVIA FND 32. Very similar to MAHO. Analog DC servos with tacho. Servo in velocity control mode with analog +/-10V input. Feedback connected via MESA to LinuxCNC. Position loop closed in LinuxCNC.

I think that if you have "axis following error", there will be a problem with the Indramat driver.
1. If I understand well, this error is triggered when the axis doesn't react properly to the LinuxCNC command. So check analog voltages from mesa to the drives. An oscilloscope would be useful in this case.
2. If signals are good, I think that the problem is with the drivers. It can be partially fried.
In my machine, I had two problems with drives. One was seized bearing in the motor. The driver wasn't able to follow the speed command.
The second time was a damaged signal transformer in thyrystor driver. Axis was slowly moving in one direction. This was a crazy failure, but I am an electronic eng., so I fixed it.
I suggest you to remove cover from Indramat driver and inspect it visually. Maybe some components are overhited and broken. You can try to publish photos here. Problems with two axis suggest that there is a problem with circuit common to whole driver. Check +/-15V power supply.

After all you can buy used drive on eBay. It is not super expensive.

I would like to help you, but I live too far away. Good luck.
  • tommylight
30 Dec 2025 14:31
Replied by tommylight on topic Following errors
You mean RotarySMP ?
  • Crusader2050
30 Dec 2025 14:24
Replied by Crusader2050 on topic Following errors
was this ever resolved? one of the youtubers I watch is currently having a similar problem with a different make of mill but with the same "following" error..
  • Hakan
30 Dec 2025 14:06 - 30 Dec 2025 14:07
Replied by Hakan on topic Ver 2.9.4 iso clean install Trouble when disabling EOE
Ok, well that went over my head. Was so focused on the LWR issue.

You need to get rid of most of the "UNMATCHED" messages in the syslog.
"UNMATCHED " are usually caused by bad latency or very commonly by using RealTek network adapters.
If you have a Realtek network adapter, you should install the r8152-dkms or r8168-dkms driver via apt.

Can you show the output of "lspci -k"? Only the network interfaces are of interest.
  • grandixximo
30 Dec 2025 13:39
Replied by grandixximo on topic Ver 2.9.4 iso clean install Trouble when disabling EOE
+1 if you have good latency
  • tar_san
30 Dec 2025 12:55 - 30 Dec 2025 13:14
Replied by tar_san on topic Ver 2.9.4 iso clean install Trouble when disabling EOE
Thanks everyone. 

Now I can make Yaskawa Sigma X  OP state and jog move from LinuxCNC stably.  ( Just did EoE disabled. )
Slave : SGDXS-xxxxA0x EtherCAT(CoE) SERVOPACK Rev02.09

According to the specification on Web, ( www.e-mechatronics.com/product/servo/sgm...c/xs_ether/spec.html )

LRD, LWR and LRW   seem to be supported. (attached image)
 
​​​But Sorry, I'm not familier with this problem.

Which configuration seems to be better in this situation?

refClockSyncCycles="-1" , with messages "Failed to get reference clock time: Input/output error"
refClockSyncCycles="1" no messages

Should I check some error from log? 



 
  • workshop54
30 Dec 2025 12:15
Replied by workshop54 on topic Escalation of a Maho MH400E Retrofit (LinuxCNC + EtherCAT)
Thanks, Mark.

I did not include the pendant yet because I had to be aware of scope creep. I also didn't include things like coolant/Fogbuster valve control and a touch-off probe.
  • workshop54
30 Dec 2025 12:12
Replied by workshop54 on topic Escalation of a Maho MH400E Retrofit (LinuxCNC + EtherCAT)
I'm not sure what the underlying issues were with the Indramat, but some of the symptoms were:
  • One of the servomotors didn't run at all
  • One of the servomotors did run, but stopped at random places
  • The last servomotor sometimes just started to run, without giving it a command, and when I did give it a command it didn't run at all.

    After debugging for weeks I figured the "easy" way would be to just do a complete redisign. And boy, whas I wrong.
  • mark-v-d
30 Dec 2025 11:30
screen blanking was created by mark-v-d
I've recently made a proper user panel on my lathe. But since I'm no
longer using the keyboard or the mouse the screensaver keeps blanking
the screen, so I have to press a key on the keyboard or move the mouse
to get the screen to wake up. I could of course completely disable the
screensaver, but I would prefer not to.

The buttons I use come from the usb through hal_input. The handwheels
are connected to the motor drives.

I cannot imagine I'm the first to encounter this issue, so has anyone
already solved this?                                                            
  • hhscott
30 Dec 2025 08:52
Replied by hhscott on topic The Current Bread & Butter Setup?
Somewhat of a novice here but like you it has been several years since my last retrofit/build of a LinuxCNC machine. The last machine built was back in 2020 and the pi platform was not really a good option then. Currently I just retrofitted a full size industrial CNC router and I am using the pi5 8GB with a Mesa 7i96s. So far it has been flawless and totally stable. My motivation for using the pi is basically downloading the image and go, other than a couple of minor tweaks to the OS (my preferences) it just runs out of the box. Using the pi I don't have to worry about finding another PC that would work in the event of a hardware failure and the fact that I can make multiple super cheap fully operating copies of the OS on a SD card cannot be beat. The machine that I just retrofitted is going to be used in a production environment and will need to be totally reliable day in and day out.
  • meister
30 Dec 2025 08:30
Replied by meister on topic LinuxCNC-RIO - RealtimeIO for LinuxCNC based on FPGA (ICE40 / ECP5)
about the VFD, it depends on the type,
i have only a hy_vfd and no real examples, what kind of VFD you have ?
is it realy modbus conform or like the hy_vfd a modbus like protocol ?
  • grandixximo
30 Dec 2025 08:30 - 30 Dec 2025 13:42
Replied by grandixximo on topic Ethercat random jitter fix
The new PR is up, this fixes everything, i will post some pictures later
Edit:
Still got a few kinks to iron out, probably tomorrow for finalized PR
  • NWE
30 Dec 2025 06:45 - 30 Dec 2025 07:02
Replied by NWE on topic Spindle Encoder: Float Precision Issues
Maybe reset the encoder count on each index pulse? Then it would not count to such high numbers. But this will break the speed output of your ddt (I think). Does the EL5151 not have an encoder velocity output? I just used a similar Beckhoff part recently but can't remember, I don't think I used or needed velocity (speed) feedback in that project.
  • meister
30 Dec 2025 06:10
Replied by meister on topic LinuxCNC-RIO - RealtimeIO for LinuxCNC based on FPGA (ICE40 / ECP5)
there are an buildin watchdog, it will disable the pwm/stepdir output if the connection is lost.
you can also set a chain of 'modifiers' to each pin (plugin -> Pins -> Modifiers) like delay, debounce, ... and 'onerror'.
The 'onerror' modifier hold the pin to low or high if connection is lost.

You can also use the 'chargepump' hal-component ( www.linuxcnc.org/docs/html/man/man9/charge_pump.9.html ) to control a master power relay.
  • kello711
30 Dec 2025 05:52
Replied by kello711 on topic 7i96S card arrived what setup is recomended
Ok, so I think I understand what I should do. Using the StepperOnline Motion Studio software, I change the ENA polarity from high to low so no input is disabled and 5V input enables the motors. Additionally, I can switch the ALM polarity from low (default) to high and take that input in as inverse. Basically like a NC estop. For the wiring on the ENA, can I daisy chain them together? Also for the ALM, can I run those in series with the GND coming into the first driver and the last driver returning the GND back to the controller, with 24V as the input common?
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