Servo interface

7i96S plus 7i77 or another analog card, 7i96S can still be found, it is ethernet and step/dir, but has an expansion port and a sserial.

eslavko wrote:

The 7i80DB and 7I77 seems available but in Pnconf I can't find option to use it as servo. Only stepper mode is available

Something is wrong, 7i80 -> 7i77 definitively work as servo. Many are using this here.
Also, you can use 7i94 (instead of 7i92 or 7i80) you will have only 1 single 25 pins expansion (for the 7i77) but also 8 smart serial (sserial). I think this is the mostly available card out of the three. 

7I77 seems to be good options for 4x servo I needed and few IO/s. They need additional board like:
7i80DB should work in paper but seems that pnconf doesn't support that board for servo!
7i94 have only one 25pin connector and bunch of Rjs (didn't check if supported by pnconf yet)
7i92 out of stock

will check compatibility with pnconf at home. Here in work I don't have linuxcnc installed.

I did quick install LinuxCNC 2.8.4 Debian 10 Buster PREEMPT-RT ISO into virtualBox just to see if I can config that stuff.
In the Pnconf the 7I80 DB and HD are available, but 7I94 are not.
 

Now for 7I80DB only 7I76x2 firmware are available, and PWM for servo can't be set.
But 7i80HD have many firmware available (SV12 as default) and servo are available.
   

As only 7i80DB are on stock, how to configure that if 7i80DB->7i77 can work at all.
Custom firmware and all work to do manually?




 

7I77 firmware is available for a 7I80DB

To use pncconf to create a hal/ini file set, I would create a config for
a 7I92+7I77 and then change the card name in the ini file

7i92+7i77 doesn't work in pnconf!
I can set number of encoders, but cant set numbers of PWM generators.