How to setup gearbox/reducer

Hello Aciera,
Can you share your note here ?.
I searched in DH-parameters for Genserkins and Vismach/Melfa-sim, could not find your note or anything mentioned about absolute encoder
Thank you.

Actually, looking at this more closely, it's probably specific to dmitrys Mechatrolink hardware as 'nyx' refers to his hardware driver:

Looks like you have an EtherCAT setup so my input is not really relevant after all.

[edit]
I would expect that you need set the gear ratio in the motor drives.

Hello Aciera,
I have no "nyx" hardware to test, so I chose other option.
I revise "pos-scale" of cia402: "gear ratio" * "encoder counts" / 360 degree It runs well this moment.

Have you tried in EtherCAT option ?.
I think it is better solution. My drive does not support, so I could not try. Please share your experience.
Thank you.

DPFlex wrote:

Hello Todd,
I understand that you make example of "incremental encoder" with quadrature.
My encoder is 17 bit absolute multi-turn type, so the counts for one turn is huge value 131072.
I calculate: 131072*80/360 = 29127.111111. Is it still correct to apply ?.

I put ENCODER_SCALE = 29127.111111 to INI file, but nothing happen.
I understand need to revise HAL file to use ENCODER_SCALE, but it seem encoder component is only suitable to incremental encoder type.
linuxcnc.org/docs/devel/html/man/man9/encoder.9.html

Please advise Thank you.
 

This is a little bit of late reply, the encoder component documentation you referenced is a software encoder counting component applicable for reading an encoder via gpio such as through a parallel port. This would not be applicable to your situation with Ether CAT. But it sounds like you are on the right track now.
(I have no experience with Ether CAT.)