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  • unknown
  • unknown
13 Aug 2025 18:39
Replied by unknown on topic Raspbery pi5 pcie adapter to parport card

Raspbery pi5 pcie adapter to parport card

Category: General LinuxCNC Questions

I give up, I've tried to explain, given links, but it appears a waste of time.
  • PCW
  • PCW's Avatar
13 Aug 2025 18:25
Replied by PCW on topic Glasmaßstab EIA-422 an Mesa 7i85 (S)

Glasmaßstab EIA-422 an Mesa 7i85 (S)

Category: Deutsch

Not a goat but rather one of our Blackbelly sheep.
  • PCW
  • PCW's Avatar
13 Aug 2025 18:09

Wiring encoder to LinuxCNC + Mesa vs motor controller

Category: Driver Boards

You still have coordinated motion even without position feedback to LinuxCNC
 
  • phino
  • phino
13 Aug 2025 18:06

Wiring encoder to LinuxCNC + Mesa vs motor controller

Category: Driver Boards

Is there some way to also provide encoder feedback to LinuxCNC to have coordinated motion? This is an important functionality for the application.

The machine will have multiple axes: 4 linear (3 + 1 redundant for gantry), 2 rotary, and 2 for a galvo (XY2-100) for a laser.
  • PCW
  • PCW's Avatar
13 Aug 2025 17:33

Wiring encoder to LinuxCNC + Mesa vs motor controller

Category: Driver Boards

In that case I would run it open loop from LinuxCNC
(local closed loop to the drive)
 
  • phino
  • phino
13 Aug 2025 17:26

Wiring encoder to LinuxCNC + Mesa vs motor controller

Category: Driver Boards

The encoder (Ditron DC13), linear forcer (Parker ML18), and motor controller (ODrive Pro) were tested to work together for one axis.

The question is how to then integrate these components with LinuxCNC and Mesa 7i95T, specifically the wiring of the encoder?

The ODrive Pro drives the linear forcer and requires encoder feedback for proper control. The intention is to control the ODrive Pro with step/dir from the 7i95T. But it is unclear how to connect the encoder to satisfy the feedback requirements for both the ODrive Pro and the LinuxCNC coordinated motion and DRO.
  • PCW
  • PCW's Avatar
13 Aug 2025 16:56

Wiring encoder to LinuxCNC + Mesa vs motor controller

Category: Driver Boards

Unless the scale was absolute or had commutation signals it's unlikely to be supported by most drives
  • directandrew
  • directandrew
13 Aug 2025 16:51 - 13 Aug 2025 16:52
Replied by directandrew on topic probe basic conversational macros missing?

probe basic conversational macros missing?

Category: QtPyVCP

Yea - when i started to look at the git, i can see its a 2 stage process.

1) the UI /variables
2) the code.

I can handle writing conversational as I have a few UI python to gcode scrips that use tkinter

too bad there is no template to follow for like a "hello world" macro test.
  • phino
  • phino
13 Aug 2025 16:49

Wiring encoder to LinuxCNC + Mesa vs motor controller

Category: Driver Boards

Ok, good to know about the recommendation on drives with local rotary encoders.

For linear forcers or brushless DC motors without local encoders, how should the independent linear encoder be wired, with respect to the motor controller and/or LinuxCNC+Mesa?
  • PCW
  • PCW's Avatar
13 Aug 2025 16:34

Wiring encoder to LinuxCNC + Mesa vs motor controller

Category: Driver Boards

I do not recommend using the drives local rotary encoder as direct feedback to LinuxCNC.
It's possible but does not really confer any advantages. 

A system with a step/dir servo drive and an independent linear scale does have some advantages
in improving accuracy.

 
  • phino
  • phino
13 Aug 2025 16:22

Wiring encoder to LinuxCNC + Mesa vs motor controller

Category: Driver Boards

Do you mean you would not use step/dir drives with a single encoder at all with LinuxCNC, or that you do not recommend wiring a single encoder to both the motor control and LinuxCNC?

In this case, the drive is a linear forcer, so there is no rotary encoder and just one separate linear encoder. I am trying to decide how to wire it up.
  • Piton4ik
  • Piton4ik
13 Aug 2025 16:10
Replied by Piton4ik on topic Tool table crash after reboot or power off

Tool table crash after reboot or power off

Category: General LinuxCNC Questions

I suggest adding a change, when the tooltable program starts, it makes a backup file of the main one, if the program starts and the file is damaged, it suggests opening the backup file
  • Hakan
  • Hakan
13 Aug 2025 16:06
Replied by Hakan on topic AX58100

AX58100

Category: EtherCAT

I answered on the github issue tracker, but you set number of steps with normal "setp" in the hal file.
The new Enable PDO/Pin should be connected to net x-enable, that way it only generates steps when the machine is "on".
Like so
setp lcec.0.E3000.StepsPerMM1 200
net x.enable lcec.0.E3000.Enable1
You also have MaxAcceleration as a new PDO and the guideline is some 25% higher than ACCELERATION in the ini file.
  • Piton4ik
  • Piton4ik
13 Aug 2025 16:06
Replied by Piton4ik on topic Tool table crash after reboot or power off

Tool table crash after reboot or power off

Category: General LinuxCNC Questions

if I'm working with tooltable, minimized the window and need to finish work, then I turn off the computer and tollyable file is corrupt
  • Piton4ik
  • Piton4ik
13 Aug 2025 16:04
Replied by Piton4ik on topic Tool table crash after reboot or power off

Tool table crash after reboot or power off

Category: General LinuxCNC Questions

I understand this, I'm trying to explain something else. If the tooltable program did not complete correctly exit, then the tool file is corrupted. There is no backup. Backups must be made manually......
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