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  • PCW
  • PCW's Avatar
10 Nov 2024 22:45
Replied by PCW on topic +-10v setup 7i97 & .ini

+-10v setup 7i97 & .ini

Category: General LinuxCNC Questions

Those are the correct output pins
 The MAX_VELOCITY and MAX_ACCEL
Are the physical maximum velocitys (in inches per second on inch machines)
and maximum acceleration in IPS^2 (typically 5 or 10 x the IPS value)

Note that on a first setup you may have the feedback reversed so you get a runaway
if the encoders are reading in the proper direction and scaled properly you can reverse the feedback by
changing the sign of OUTPUT_SCALE

 
  • Lcvette
  • Lcvette's Avatar
10 Nov 2024 22:45

probe basic - toolpath/file preview loading error

Category: QtPyVCP

in the interim, you can uninstall linuxcnc and reinstall using the lockdown deb version which does not prduce the error message, use the deb download links at the bottom of the page here:

linuxcnc.org/downloads/

or follow the newly updated probe basic docs page here for installation instructions on the deb:

kcjengr.github.io/probe_basic/

select develop or stable per your requirement, both tested and work on the 2.9.3 lockdown deb of linuxcnc!

Thanks for bringing this up, the powers that be are aware and are investigating the issue!

Chris
  • Sziggy_NC
  • Sziggy_NC
10 Nov 2024 22:04
+-10v setup 7i97 & .ini was created by Sziggy_NC

+-10v setup 7i97 & .ini

Category: General LinuxCNC Questions

Hi all,
I was trying to follow tommylight's guide on servo tuning, but once I hook up the +-10v the motor jumps 0.010 on enable. Checking with a multimeter I am able to see 10v appear when I enable the machine. The measured pins are 3 & 4 on TB3 of a 7i97T. The manual shows 3 as GND and 4 as AOUT0.
      Are these pins the ones I should be useing for +-10v?
I have attached my hal and ini files. I would not be supprised if the problem is in my ini file. 
I am unsure of how to determine what values to use for MAX_VELOCITY, MAX_ACCELERATION, and OUTPUT_SCALE. I have tried different combinations of values without any luck. I have tried reading the docs and reading through all the forum posts I could find on those subjects.
     Could improper values for these or other variables cause the behavior I am seeing?
Thank you for your time.
  • mjones@welfab.ca
  • mjones@welfab.ca
10 Nov 2024 21:59

Mesa, Linuxcnc with step direction servo's for axis and analog servo spindle.

Category: Basic Configuration

Thanks for the quick response, I am always surprised at how quick you are.
Unfourtunatly I had to leave the shop and go home. In the morning I will see how well I can figure out how to get a man mesaflash to see what I have.
  • tommylight
  • tommylight's Avatar
10 Nov 2024 21:37

Mesa, Linuxcnc with step direction servo's for axis and analog servo spindle.

Category: Basic Configuration

No worries, we do need correct info to be able to give any help, 7i76 and 7i76E are the same thing but NOT the exact same thing.
Mesa can do step/dir and analog at the same time and so can LinuxCNC, so that is easy, just use mesaflash to check what firmware is already in the 7i76E, then we can decide if a flash is needed.
see in a terminal
man mesaflash
for how to use it.
  • mjones@welfab.ca
  • mjones@welfab.ca
10 Nov 2024 21:06

Mesa, Linuxcnc with step direction servo's for axis and analog servo spindle.

Category: Basic Configuration

7i76E is connected to the computer through ethernet, the 7i77 connects to the 7i76e with a ribbon cable and the 7i64 connects to the 7i77 with a modified ethernet cable.
The boards have 5v and 24v field power.
It has been a while since I wired and had time to do the cards but I remember that I did flash one for some reason or another. Does it need different flashing for step direction than for analog?
And sorry again, as I said it has been a while since I had time to get into this again and don't remember where to type readhmid
  • Rkatts
  • Rkatts
10 Nov 2024 20:58
Replied by Rkatts on topic Installing ethercat repositories

Installing ethercat repositories

Category: EtherCAT

I was able to edit the file by using:
sudo nano science_EtherLab.list
Then it all worked.  Thanks for the notes.
  • tommylight
  • tommylight's Avatar
10 Nov 2024 20:49

After switching from wheezy to Debian 12 only X axis runs smooth (sometimes)

Category: General LinuxCNC Questions

No need to install anything, you can do all the testing in Live mode, just have the configs on another USB, or start them from the existing hard drives.
I/O errors are usually from failing hard drives, sometimes from failing memory or memory controller, but over network might be bad connection usually manisefested by very long waits for read/write.
  • denhen89
  • denhen89's Avatar
10 Nov 2024 20:39

After switching from wheezy to Debian 12 only X axis runs smooth (sometimes)

Category: General LinuxCNC Questions

Thanks Tommy for your quick reply.
I did not change the servo period, only the Base Period, but i did that after i got some error message at linuxcnc startup (latency... 25000..task 0..) - i did not change anything besides the parport addresses for the other pc i setup first with debian 12.

I will now look for Wheezy ISO and install it on the PC where i first installed Debian 12, but i will connect it to the cnc router on tomorrow and then i will post the result.

PS: On the original PC from the cnc router (that had the ondrive input output error and that was so slow), i had Wheezy and Linux 2.8.4-76 and i copied those original files to the new Debian 12 pc, without converting the files with the auto-converting pop up function, because as i remember correctly, this is not necessary if my config was working with Linux 2.8? (i remember i had to do it when i updated from 2.7 i believe - i had to change some command etc.)
  • tommylight
  • tommylight's Avatar
10 Nov 2024 20:22

Mesa, Linuxcnc with step direction servo's for axis and analog servo spindle.

Category: Basic Configuration

It would be much better to give us correct info about your setup, like what is attached to 7i76 and 7i77?
Or is it a 7i76E with 7i77?
Did you flash the correct firmware for whatever is in use?
What does readhmid return?
Do the boards have 5V and Field (12-24V) power?
  • Ismacr63
  • Ismacr63
10 Nov 2024 20:19
Replied by Ismacr63 on topic Use z probe and 3d probe in the same input?

Use z probe and 3d probe in the same input?

Category: QtPyVCP

I've been testing these days and finally I have both probes working via OR2 (I don't know if it's the best option), each one in a different input, I can have both connected at the same time without problems. I've decided to do without the estop input and connect the z probe there. The spindle of the machine works through its original board and has its emergency stop and I use the linuxcnc emergency stop with a mini wireless keyboard if necessary...
I want to buy a 7i96s board soon, but I'm a bit scared of all the configuration it has...
  • tommylight
  • tommylight's Avatar
10 Nov 2024 20:17
Replied by tommylight on topic New basic setup recommendations

New basic setup recommendations

Category: General LinuxCNC Questions

1. No.
2. Yes bit to complicated, and do not buy those ebay stuff at over 80$ as that is Mesa price and Mesa is much, much better.
3. 2.9.3 but i would stick with Wheezy and 2.7 for parallel port.
4. Yes, rarely might need editing. Granted no special comps/features were in use.
  • tommylight
  • tommylight's Avatar
10 Nov 2024 20:11

After switching from wheezy to Debian 12 only X axis runs smooth (sometimes)

Category: General LinuxCNC Questions

Do not change the servo period. Ever. Except in some strange cases, never.
Download the Wheezy ISO, boot the PC from it, copy the existing (non converted to 2.8 or 2.9) config, open the folder, right click on the .ini file, select "open with other ..." on the next window near the bottom type linuxcnc and press OK.
Does everything work?
  • tommylight
  • tommylight's Avatar
10 Nov 2024 20:02
Replied by tommylight on topic General Questions about using ethercat

General Questions about using ethercat

Category: EtherCAT

LinuxCNC IS the motion controller, so EtherCAT should work without any additional controllers.
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