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  • PCW
  • PCW's Avatar
20 Jun 2025 20:58
Replied by PCW on topic Lo ejes dejaron de moverse

Lo ejes dejaron de moverse

Category: General LinuxCNC Questions

Short in the wiring, missing ground or something similar is possible.
Plasma systems are pretty unforgiving due to the massive EMI they
generate at arc start.

The card is likely repairable by replacing U5 and/or U7

Even shielded cables can be a liability if there is a ground error
as they can couple ground noise into the signals.
  • NT4Boy
  • NT4Boy
20 Jun 2025 20:53
Replied by NT4Boy on topic HURCO KMB-1 Control Update

HURCO KMB-1 Control Update

Category: Milling Machines

Thanks Andy,
Since writing that I did manage to inadvertently introduce an axis offset via the tool table, so have become super cautious.
  • PCW
  • PCW's Avatar
20 Jun 2025 20:49 - 20 Jun 2025 20:50
Replied by PCW on topic Mesaflash 3.4.9 shows "Unsupported ethernet device 7I76EU" despite successful pi

Mesaflash 3.4.9 shows "Unsupported ethernet device 7I76EU" despite successful pi

Category: Driver Boards

You would load the 7I76eu firmware that includes PKTUart support

7i76eu_7i76x1_pktv3d.bin

This file is in the 7i76eu.zip archive downloaded from Mesa's store (in the specifications tab)

You program it with mesaflash, something like:

mesaflash --device 7i76eu --addr 10.10.10.10 --write 7i76eu_7i76x1_pktv3d.bin --reload

 
  • Johnnysacalu
  • Johnnysacalu
20 Jun 2025 20:42
Replied by Johnnysacalu on topic Lo ejes dejaron de moverse

Lo ejes dejaron de moverse

Category: General LinuxCNC Questions

Menos de 1v antes de encender linuxcnc y 0v cuando lo enciendo en step/dir
pero tengo tierra, cables blindados y filtro emi que pudo fallar? 
 
  • AdelRTP
  • AdelRTP
20 Jun 2025 20:34
Replied by AdelRTP on topic Mesaflash 3.4.9 shows "Unsupported ethernet device 7I76EU" despite successful pi

Mesaflash 3.4.9 shows "Unsupported ethernet device 7I76EU" despite successful pi

Category: Driver Boards

Hi andypugh,
i dont know how to flash the pktUART, i dont know how to download it, i want to use it to control mr-je driver from Mitsubishi
 
  • andypugh
  • andypugh's Avatar
20 Jun 2025 20:20
Replied by andypugh on topic HURCO KMB-1 Control Update

HURCO KMB-1 Control Update

Category: Milling Machines

By experimentation, the Y and X offsets can be entered pressing tool touch off with the wrong axis selected. On a 3 axis mill, as far as I can tell numbers in these columns are ignored.

They are not ignored, but if you have X and/or Y offsets applied when you touch-off then the tool offset anf G54 offsets will cancel out. 

XY offsets are not often used on a mill, but some machines have one head and a number of tools that pop down from it, and XY offsets are useful there to account for the different positions of the tool axes. 

I suggest making sure that all the offsets are zero in the tool-table editor. 

If you do find that you have accidentally put an offset in the wrong axis, then you can MDI 
G10 L1 Pn X0 Y0 G43
linuxcnc.org/docs/devel/html/gcode/g-code.html#gcode:g10-l1
Where "n" is the current tool number. 
  • andypugh
  • andypugh's Avatar
20 Jun 2025 20:08
Replied by andypugh on topic Mesaflash 3.4.9 shows "Unsupported ethernet device 7I76EU" despite successful pi

Mesaflash 3.4.9 shows "Unsupported ethernet device 7I76EU" despite successful pi

Category: Driver Boards

thanks a lot Tommy,
i’m trying to control two servo drives (Modbus RTU) with a Mesa 7i76EU in LinuxCNC, but I can’t use Classic Ladder or PktUART

Have you spotted the new Modbus / PktUART driver? It's more flexible that mesa_modbus. (but only exists in the dev version of LinuxCNC) 

linuxcnc.org/docs/devel/html/man/man1/mesambccc.1.html
linuxcnc.org/docs/devel/html/man/man9/hm2_modbus.9.html
 
  • andypugh
  • andypugh's Avatar
20 Jun 2025 20:01
Replied by andypugh on topic Linuxcnc 2.4.5 with Ubuntu 10.04 , Terminated with Error!

Linuxcnc 2.4.5 with Ubuntu 10.04 , Terminated with Error!

Category: General LinuxCNC Questions

This problem has been seen at least once before. Maybe there is some help in this thread: forum.linuxcnc.org/38-general-linuxcnc-q...t-module-error#68736
  • andypugh
  • andypugh's Avatar
20 Jun 2025 19:53
Replied by andypugh on topic Probe tripped during non-probe move

Probe tripped during non-probe move

Category: Basic Configuration

  • Move down quickly until probe touch
  • Move up a bit

It might be better to probe up (to loss of contact) then slowly down again rather than do a maybe-too-long fixed-length move. 
 
  • AdelRTP
  • AdelRTP
20 Jun 2025 19:39
Replied by AdelRTP on topic Mesaflash 3.4.9 shows "Unsupported ethernet device 7I76EU" despite successful pi

Mesaflash 3.4.9 shows "Unsupported ethernet device 7I76EU" despite successful pi

Category: Driver Boards

thanks a lot Tommy,
i’m trying to control two servo drives (Modbus RTU) with a Mesa 7i76EU in LinuxCNC, but I can’t use Classic Ladder or PktUART
  • andypugh
  • andypugh's Avatar
20 Jun 2025 19:34
Replied by andypugh on topic Remora - ethernet NVEM / EC300 / EC500 cnc board

Remora - ethernet NVEM / EC300 / EC500 cnc board

Category: Computers and Hardware

But this is very bad idea to send encoder's index pulse by ethernet.
Let's make calculations.
3000 rpm and 1 ms base_thread is 18 degrees accuracy - not acceptable.

This is actually fine, and is how all the other encoders work (Mesa, Pico, software) 

The counts are cleared on the index. 
At the beginning of the execution thread the motion controller gets the _current_ position, which includes all counts since the index.
These are used to calculate the actual position in space of the index. 
It isn't even time-critical, what the controller gets is the position in space of the index. It would still be perfectly accurate even if the motor did several turns between the index reset and the data getting to the PC. 
 
  • andypugh
  • andypugh's Avatar
20 Jun 2025 19:21
Replied by andypugh on topic Errors when searching for axis origins

Errors when searching for axis origins

Category: General LinuxCNC Questions

Yes, there is almost certainly something that you can do in HAL to make this work. Do the drives / encoders provide an output to say that they are ready?

You could try enabling the encoders as soon as the machine is out of e-stop, and potentially add a delay in HAL that disables motion for a suitable time.

What needs turning on in what order to make it work?
  • andypugh
  • andypugh's Avatar
20 Jun 2025 19:16
Replied by andypugh on topic Do I need a better PC?

Do I need a better PC?

Category: EtherCAT

I don't know much about EtherCAT but I would have expected most of the motor control to be located in the slave device, so that LinuxCNC can't make it run rough. (but I might be wrong)

Do the servos initially do the field orientation with hall sensors and then switch to the encoder? If so then it could be a dodgy hall sensor or hall sensor connection. (Motors will run rough if the commutation is wrong)
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