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  • tommylight
  • tommylight's Avatar
25 Jul 2025 22:51
Replied by tommylight on topic limit switch problem

limit switch problem

Category: General LinuxCNC Questions

This is a stab in the dark as i do not have a 7i96S (did have 7i96) but inputs should be with something like "inmux" in the naming, sorry been a long time since i did a 7i95 that had something similar in the pin naming.
  • tommylight
  • tommylight's Avatar
25 Jul 2025 22:49
Replied by tommylight on topic Controlling existing motors with resolvers

Controlling existing motors with resolvers

Category: Driver Boards

While you wait for PCW to confirm when the 8i20 might be in stock:
You can use other drives to drive motors and still use the existing resolvers, but no idea what exactly would work for you, probably any "voltage mode" drive, and maybe "torque mode" will also work, but you should wait for someone else to chime in and confirm any of this.
I am sure LinuxCNC will work with any setup, not sure about cheap drives plastering all possible options on the label and later finding out they do only step/dir or only +-10V...although some +-10V should work if they do not explicitly require having a tacho attached.
This would mean using a Mesa 7i97T together with 7i49.
In the meantime some more info might help narrow things down, like motor voltage/current/power, resolver type/make/model (very important as i have resolvers that do not work with 7i49, yes i am unlucky as heck), brakes, tacho maybe, etc.
  • Benb
  • Benb's Avatar
25 Jul 2025 22:43

Controlling existing motors with resolvers

Category: Driver Boards

By providing detailed technical specifications for your servo amplifier and motor, you’ll significantly improve your chances of receiving an accurate answer.
  • tommylight
  • tommylight's Avatar
25 Jul 2025 22:39

HUGE Mazak fully automated 5 axis laser cutter for pipes/tubes/profiles/

Category: Show Your Stuff

Yes, the networking part, we were misled badly and chased our tails by having the laptop wired to the console while the network required for file transfers was at the back of the main electronics cabinet! That is 6 hours i will never get back! I kept wondering why W2K has an IP set and the Mazak software has another IP set...now i know.
So now it can be used properly with the laptop, but i would still like to be able to use it without the laptop attached since i already figured out how to copy stuff to it, so i will report the exact model when they get back from Germany in a few days.
Thank you very much for everything.
  • Tntmold
  • Tntmold
25 Jul 2025 21:59

Ethercat installation from repositories - how to step by step

Category: EtherCAT

Is there a repository that currently is complete and works? I have been trying to get an installation working since March with no luck at all. I continually get errors about various components (LCEC, Boost, meson, etc) I have been able to get an "install" using the repository on this thread but it seems to lack full connection to the before mentioned components
  • ErrickW
  • ErrickW
25 Jul 2025 21:32
  • Franklin
  • Franklin
25 Jul 2025 21:29 - 25 Jul 2025 21:31
Replied by Franklin on topic WHB02 remote control to QtPlasmac

WHB02 remote control to QtPlasmac

Category: Plasmac

Thank you, but I have already changed the plasmac component and got the result I wanted. I added a few lines:
   self.extJogXplusPin = self.h.newpin('ext_jog_x_plus', hal.HAL_BIT, hal.HAL_IN)
   self.extJogXminusPin = self.h.newpin('ext_jog_x_minus', hal.HAL_BIT, hal.HAL_IN)
   self.extJogYplusPin = self.h.newpin('ext_jog_y_plus', hal.HAL_BIT, hal.HAL_IN)
   self.extJogYminusPin = self.h.newpin('ext_jog_y_minus', hal.HAL_BIT, hal.HAL_IN)
   self.extJogZplusPin = self.h.newpin('ext_jog_z_plus', hal.HAL_BIT, hal.HAL_IN)
   self.extJogZminusPin = self.h.newpin('ext_jog_z_minus', hal.HAL_BIT, hal.HAL_IN)

   self.extJogXplusPin.value_changed.connect(lambda v: self.gui_button_jog(1 if v else 0, 'x', 1))
   self.extJogXminusPin.value_changed.connect(lambda v: self.gui_button_jog(1 if v else 0, 'x', -1))
   self.extJogYplusPin.value_changed.connect(lambda v: self.gui_button_jog(1 if v else 0, 'y', 1))
   self.extJogYminusPin.value_changed.connect(lambda v: self.gui_button_jog(1 if v else 0, 'y', -1))
   self.extJogZplusPin.value_changed.connect(lambda v: self.gui_button_jog(1 if v else 0, 'z', 1))
   self.extJogZminusPin.value_changed.connect(lambda v: self.gui_button_jog(1 if v else 0, 'z', -1))
It works great. 
  • nanowhat
  • nanowhat
25 Jul 2025 21:19

Controlling existing motors with resolvers

Category: Driver Boards

At work we have a robot with a dead servo drive. The manufacturer is still around, and says that the original drives aren't available by any means. As far as I can tell, the motors are ordinary 3 phase brushless servos, but with resolvers. I can't find any industrial servo drives or systems that use resolvers. A few manufacturers list drives that can take input from a resolver, but of course they all say "call for quote" before I can get any information on the device.

I'm aware of the Mesa 7I49 resolver interface board, and the 8I20 PWM amplifier (which is out of stock). Are there any other industrial servo amplifiers that work like the 8I20?

This is a professional application: I am not going to screw around designing boards, nor will I consider hobby-grade hardware. I'd like the next person who needs to work on this machine to be able to do so.
  • RLA
  • RLA
25 Jul 2025 20:44
limit switch problem was created by RLA

limit switch problem

Category: General LinuxCNC Questions

Hi ...after finally getting a micro switch wired up for limit switch,,,light shows on/off on mesa7ip6s board,..hal meter shows working... but when I run axis and hit switch held in my hand....no change....keeps moving. been at his all day...I usually like to figure things out myself but now I am weary...grateful for some help if possible.

Thanks,

Rick
  • mBender
  • mBender
25 Jul 2025 19:53

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

Category: Computers and Hardware

Put my PCB together! It works! Very happy to have moved on from breadboard to something more reliable!
  • andypugh
  • andypugh's Avatar
25 Jul 2025 19:28

"KeyError" suddenly appears after moving a limitswitch

Category: QtPyVCP

"Key Error" means that the system is looking in the object returned by getWcsOffsets() call for an item that doesn't exist.

It looks like, for whatever reason, the getActiveWcsIndex() call is returning -1. There isn't a -1-th WCS, so it returns an error message.

This looks like qtPyVcp isn't handling the case when the apparent WCs is zero properly.

github.com/kcjengr/qtpyvcp/blob/main/src...c_datasource.py#L194

I think you should raise this as a bug:
. github.com/kcjengr/qtpyvcp/issues
  • andypugh
  • andypugh's Avatar
25 Jul 2025 19:05
  • Waggi
  • Waggi
25 Jul 2025 19:01
  • andypugh
  • andypugh's Avatar
25 Jul 2025 18:49
Replied by andypugh on topic Biesse Rover B2.30 LinuxCNC

Biesse Rover B2.30 LinuxCNC

Category: General LinuxCNC Questions

For reference, my PCI motherboard (I have forgotten what it is, but that doesn't matter) in which I was using a Mesa 5i23 PCI card died.
I tried a PCIe to PCI adaptor in a DN2800MT motherboard running Debian Wheezy and it didn't work.

But when I tried an Asrock N100DC motherboard and Debian Bookworm it worked fine.

One of these (though the link will be dead in another 5 years)
www.amazon.co.uk/dp/B0CHM91KJB
  • PCW
  • PCW's Avatar
25 Jul 2025 18:18

How to install kernel patch? (Moschip 9900)

Category: Installing LinuxCNC

I would test with the motor power off (and maybe parallel port disconnected)
to verify if this is a noise issue (noise ground path through parallel interface)
or a software issue.
 
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