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  • my1987toyota
  • my1987toyota's Avatar
01 May 2025 17:57
Replied by my1987toyota on topic fresh install issue with 2.9.4

fresh install issue with 2.9.4

Category: Installing LinuxCNC

Yup still there.
today's download  and install yields this report on terminal
 

File Attachment:

File Name: error2.txt
File Size:1 KB


after running sudo dpkg -P raspi-firmware
terminal yields this report
 

File Attachment:

File Name: error3.txt
File Size:1 KB


Sorry tommylight I know it's always something. I will just put a note with
my install disk ( yes I still make disks instead of thumb drives ) LOL
  • PasstScho
  • PasstScho
01 May 2025 17:52
Replied by PasstScho on topic mesa 7i73 4x8 keypad problems on KEY8 input

mesa 7i73 4x8 keypad problems on KEY8 input

Category: Driver Boards

thank you for the quick response!
I am not sure what you mean by beginning of the next cycle.
If I remember right, the samling of rows is done with 3.7kHz scan frequency and each row is measured for ~30µs.
From my understanding the inputs should be sampled at the end of each cycle so here ~25µs after the output is set to low. So right before it is set back to hi-z.
  • djdelorie
  • djdelorie
01 May 2025 17:50

Can someone explain how squaring is handled on dual motor linear axis?

Category: CNC Machines

I have a dual-Y configuration on my cnc, and what I have is two limit switches - one for each motor. The config has a separate section for each *motor* so you can specify the homing offsets independently. In my case, the two entries differ by 0.036 to bring the gantry into square. So I'm using your #3 solution :-) I figured out the offset value by homing, measuring how off-square I was, updating the config, and re-homing; repeating until it came out square.

Your alternative is to mechanically tie the two motors together (or use one motor and two screws) and tell linuxcnc you only have one "motor"
  • PCW
  • PCW's Avatar
01 May 2025 17:49

7i96 & 7i77 Configuration for Drill Line

Category: Basic Configuration

Looks like the drives were originally setup  for up/down
(Pulse F, Pulse R in the drawing) mode so you might try
setting the 7I96 stepgens into that mode. 

(step_type = 1)
  • tommylight
  • tommylight's Avatar
01 May 2025 17:40

Probe Basic and Carousel ATC with Geneva and Stepper

Category: QtPyVCP

Why are you using the stepgen board?
  • jtoscano
  • jtoscano's Avatar
01 May 2025 17:29

7i96 & 7i77 Configuration for Drill Line

Category: Basic Configuration

I've been working on retrofitting a Soltera TDD1000 CNC drilling machine with a Mesa 7i96 and 7i77, but I’m running into an issue where the servos only move in one direction, regardless of the direction I command in LinuxCNC.

I connected Encoder 0 on the 7i96 to the Minas A5B (MDDKT3530E) servo driver via the X4 connector. Here's my current wiring setup:

    Mesa ENC0 Step- → Minas PULSH2 (Pin 45)
    Mesa ENC0 Step+ → Minas PULSH1 (Pin 44)
    Mesa ENC0 Dir- → Minas SIGNH2 (Pin 47)
    Mesa ENC0 Dir+ → Minas SIGNH1 (Pin 46)
    Minas Pin 7 (COM+) → 24V power supply
    Minas Pin 41 (COM0) → 0V (power supply ground)
    Minas Pin 29 is jumpered to Pin 41 (0V)

I attempted adjusting some parameters on the Minas A5B (P0.01, P0.05, P0.06, & P0.07) but none of these changes resolved the issue. (I’ve attached the current parameter set from the driver.)

I also tried swapping the DIR+ and DIR- lines on the Mesa board to see if the motor would reverse direction, but it still only moved in the same direction.

Using Panaterm to connect to the servo over USB, I confirmed in Test mode that the motor can move in both directions, so I suspect the issue lies somewhere in either the LinuxCNC configuration, or the servo driver wiring/configuration.

Has anyone worked with these Minas A5B servo drivers before? Any guidance on how to troubleshoot or resolve this issue would be greatly appreciated.

Attached are the current Minas Paramters, The Linuxcnc Configuration, and a PDF of the original wiring on the drill line.
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