Mesa 7i80DB to retrofit 4 axis VMC

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10 Feb 2024 17:17 #293014 by PCW
Actually I was wrong, pncconf does have at least one 7I92+ 7I77+7I76 configuration:

 

PWM setup:

 
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10 Feb 2024 17:28 #293015 by matos67
I don't know what i'm missing but i don't get the same tabs than you!
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10 Feb 2024 17:52 #293017 by PCW
I wonder if its a locale bug?

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11 Feb 2024 11:25 #293078 by matos67
It's in fact a locale bug, I switched debian from french to english (US) and tabs appeared again in pncconf!
Thank's for your help.

 

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15 Feb 2024 18:53 #293427 by matos67
Hi, work in progress, i have hooked 7i76 card on J2 from 7i80DB. I made a simple config on Pncconf with 3 axis , spindle with encoder and a few input, outputs.
Linuxcnc is happy with it and i can read the inputs and set outputs from TB6.
Now i try to read the spindle encoder but can't see anything in hm2_7i80.0.encoder.05.position for example when i turn the encoder shaft. The encoder is wired on TB3 in differential mode and all signal pins are alternating between 0.2v and 3V when the encoder rotates. 

File Attachment:

File Name: sdc30pncconf4.hal
File Size:13 KB
 

File Attachment:

File Name: sdc30pncconf4.ini
File Size:4 KB
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15 Feb 2024 20:29 #293434 by PCW
What firmware are you using on the 7I80DB?
Its likely the encoder numbering will not match
the 7I92 pinout pncconf expects.

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15 Feb 2024 20:44 #293435 by matos67
I'm using 7i80db_25_7i76x2_7i77x2D.bit
 

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15 Feb 2024 21:37 #293441 by PCW

I'm using 7i80db_25_7i76x2_7i77x2D.bit

 

In that case the encoder on the first 7I76 (connected to  P2)
would be encoder 12. Encoder 5 would be the last encoder on the
first 7I77 (connected to P4)
 
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