Mesa 7i92+7i76+7i85S

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4 years 3 weeks ago #253615 by PCW
Replied by PCW on topic Mesa 7i92+7i76+7i85S
Have you checked for backlash?

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4 years 3 weeks ago #253626 by Artur_1617
Replied by Artur_1617 on topic Mesa 7i92+7i76+7i85S
Backlash is about 0.01

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4 years 3 weeks ago #253684 by PCW
Replied by PCW on topic Mesa 7i92+7i76+7i85S
Can you post a halscope plot of the error?

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4 years 1 week ago #254833 by Artur_1617
Replied by Artur_1617 on topic Mesa 7i92+7i76+7i85S
For now I start to working without scales.
But need spindle encoder for tapping.
The encoder is connected to 7i85 to third encoder input.
But dont see any signal from them in halmeter  ( encoder04).
The encoder is 12V power supply and GND is connected  with GND power supply from mesa card.
Encoder give 0-3V


 

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4 years 1 week ago #254855 by PCW
Replied by PCW on topic Mesa 7i92+7i76+7i85S
Encoder 04 would be on the 7I76

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4 years 1 week ago #254856 by Artur_1617
Replied by Artur_1617 on topic Mesa 7i92+7i76+7i85S
In halmeter
I look on encoder 0, 1, 2 ,3 ,4 and dont see any change moving encoder...
Which encoder should look?

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4 years 1 week ago #254858 by PCW
Replied by PCW on topic Mesa 7i92+7i76+7i85S
With your current firmware, Encoders 0..3 are on the 7I85S,
and encoder 4 is on the 7I76.
If you have a single ended encoder, you need to jumper its
inputs for single-ended = TTL mode

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4 years 1 week ago #254864 by Artur_1617
Replied by Artur_1617 on topic Mesa 7i92+7i76+7i85S
Firmare  forum.linuxcnc.org/media/kunena/attachme.../7i92_7i76_7i85D.zip
Jumper is ok.
Now the first encoder on 7i85s is encoder02  the second is encoder03 and working.

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4 years 1 week ago #254869 by PCW
Replied by PCW on topic Mesa 7i92+7i76+7i85S
If you have a 7I85S, that is incorrect firmware (its for a 7I85)

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4 years 1 week ago #254883 by Artur_1617
Replied by Artur_1617 on topic Mesa 7i92+7i76+7i85S

1. The bit file you used has stepgen features that are not supported in LinuxCNC 2.8
Here is a 2.8 compatible 7I76+7I85 bitfile:

 

Attachment not found


 
Please give me correct bit file for linuxcnc 2.8

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