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  • Neiji_msk
  • Neiji_msk
20 Jun 2025 06:24 - 20 Jun 2025 06:46
Errors when searching for axis origins was created by Neiji_msk

Errors when searching for axis origins

Category: General LinuxCNC Questions

Hi guys, I have a question, when I turn on LinuxCNC drivers with absolute encoders, they make a delay to search for the machine zeros, accordingly, if I turn on the CNC before they find the beginning, a bunch of errors appear, is it possible to make some kind of delay when turning on until the driver finds the beginning? thanks
  • meister
  • meister
20 Jun 2025 06:22
Replied by meister on topic LinuxCNC-RIO - RealtimeIO for LinuxCNC based on FPGA (ICE40 / ECP5)

LinuxCNC-RIO - RealtimeIO for LinuxCNC based on FPGA (ICE40 / ECP5)

Category: Computers and Hardware

Here is an output from the generator using the Tangbob configuration as an example:

github.com/multigcs/riocore/tree/dev/doc/example-output/Tangbob

and here is a kind of documentation of the generated gateware:

www.multixmedia.org/Tangbob-Gateware/
  • Johnnysacalu
  • Johnnysacalu
20 Jun 2025 05:44
Replied by Johnnysacalu on topic Lo ejes dejaron de moverse

Lo ejes dejaron de moverse

Category: General LinuxCNC Questions

7i96s
 
  • Johnnysacalu
  • Johnnysacalu
20 Jun 2025 05:31
Replied by Johnnysacalu on topic Lo ejes dejaron de moverse

Lo ejes dejaron de moverse

Category: General LinuxCNC Questions

Perdon 7i96s
  • Kieran
  • Kieran
20 Jun 2025 05:08
Do I need a better PC? was created by Kieran

Do I need a better PC?

Category: EtherCAT

ok, sometimes when I run my Ethercat servos, they sound like they have bad bearings/run rough. Restarting linuxcnc sometimes solves it and they run buttery smooth. I've also gotten a warning unexpected realtime delay. Im guessing Its because Im running the cheapest HP pavilion desktop junk(runs off a little wall wart and has the smallest cooling fan on a 1x1" cpu heat sink. :D ) 
Anything I should look for when buying a proper motherboard for ethercat linuxcnc?
  • Kieran
  • Kieran
20 Jun 2025 03:58 - 20 Jun 2025 04:02
Replied by Kieran on topic Getting Ebay 2.6kw ethercat kit going.

Getting Ebay 2.6kw ethercat kit going.

Category: EtherCAT

well I reRan lcec_configgen and got a different reading on slave IDX 2 not sure why. I was able to fart around with the XML and get the servo going. it about jumped off my bench. she's a ripper.


working XML snippet for the Ebay servo/ DVS P200SE drive.
Warning: Spoiler!
  • tommylight
  • tommylight's Avatar
20 Jun 2025 00:39
Replied by tommylight on topic Plasma hit count

Plasma hit count

Category: Plasmac

  • TheTinkeringMechanic1
  • TheTinkeringMechanic1
20 Jun 2025 00:20 - 20 Jun 2025 01:36
Reposition Preview grid. was created by TheTinkeringMechanic1

Reposition Preview grid.

Category: Basic Configuration

I believe I have just about everything I need figured out on our double gang grinder CNC lathe conversion as far as operation goes.. The only thing I have yet to figure is altering the position of the where the marker starts on the preview grid. I would really like to have the plot marker in preview to be in the middle of the X on the grid. Tool offset and home offset have had zero change to the position marker's start on the grid. 
Thanks in advance.
  • aabtech
  • aabtech's Avatar
19 Jun 2025 23:51
Plasma hit count was created by aabtech

Plasma hit count

Category: Plasmac

Hi, I work as a CNC Plasma Beam line Operator and any time I change consumables I have to reset the number of hit of the plasma to zero and as is cutting it count the number of hit, and know how long the consumables last and to change them can't we do the same thing to QtPlasmaC.
  • PCW
  • PCW's Avatar
19 Jun 2025 23:45
Replied by PCW on topic Laser Head Height Sensor – Looking for a Beta Tester

Laser Head Height Sensor – Looking for a Beta Tester

Category: Plasma & Laser

It does make the resolution of the encoder frequency  a bit better than at 1 ms
but the periodm does not care as you specify the number of period averages.
  • tommylight
  • tommylight's Avatar
19 Jun 2025 23:07
Replied by tommylight on topic QTPlasmac pierce delay handling

QTPlasmac pierce delay handling

Category: Plasmac

File Attachment:
File Attachment:
  • tuxcnc
  • tuxcnc
19 Jun 2025 22:48
Replied by tuxcnc on topic Remora - ethernet NVEM / EC300 / EC500 cnc board

Remora - ethernet NVEM / EC300 / EC500 cnc board

Category: Computers and Hardware

Hi, which module have you been trying to use? The software Encoder module or the QDC module? Both support the index pulse detection and encoder count latching so LinuxCNC can acquire the index position count.
 

Hi.
QDC.
The encoder_raw code is good and there are only hardware problems (optocouplers and RC filters cut the bandwith).
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.
The solution is send not index, but raw_count lathed at encoder's index edge interrupt routine.
There is in your code, line 321 in qdc.cpp file:
this->indexCount = ENC_GetPositionValue(this->encBase);
But there is no indexCount hal pin...
In the fact, we don't need receive index pulse at component side, because change of indexCount means index was betwen last and present data transmision.
So we can update indexCount at every encoder's index edge, but use them only if hal index_enable pin is true. (look at my code).

I tried use raw_count and index pins connected to PRUencoder module. Sometimes it works, mostly not.
But even if it works, PRUencoder resets position to zero at received index, not at real index.
In my code, position is reset not to zero, but to
pos = (fb.raw_encoder - latched_enc) / pos_scale;
(raw_encoder may be not equal latched_enc)
So there is no delay.
In this case I not need PRUencoder, because I move pos and vel calculations to my component. 
  • bcorley
  • bcorley
19 Jun 2025 22:44
Replied by bcorley on topic Laser Head Height Sensor – Looking for a Beta Tester

Laser Head Height Sensor – Looking for a Beta Tester

Category: Plasma & Laser

Thanks for the info. From what I gather, reading previous posts, the periodm function requires linuxcnc 2.10. I'll have to make up another test unit for that. Also, I'm running a 2msec servo thread. Is that going to be an issue?
  • PCW
  • PCW's Avatar
19 Jun 2025 22:36
Replied by PCW on topic homing with Phase Z encoder on MESA 7i96s

homing with Phase Z encoder on MESA 7i96s

Category: Advanced Configuration

None of these are needed and the first will likely mean
that you never get an index.

setp [HMOT](CARD0).encoder.00.index-mask 1
setp [HMOT](CARD0).encoder.00.index-invert 0
setp [HMOT](CARD0).encoder.00.index-mask-invert 0

The index mask logic is intended for configurations
that have a index mask input pin which is typically used
for spindles where the encoder is on the motor and the
spindle is geared down from the motor.
 
  • kworm
  • kworm
19 Jun 2025 22:33
Replied by kworm on topic QTPlasmac pierce delay handling

QTPlasmac pierce delay handling

Category: Plasmac

The reed switch works great. Thanks for everyones help.
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