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It worked! I don't have much time right now to play with it, but I was able to manually turn on the stepgen index-enable and it turned off and zeroed the stepgen count with the index signal. Thanks so much for your help with this, it's very much appreciated.

Sorry,  I got the stepgen version wrong, will retry.


Try this:

 


 

I loaded it once and power cycled it, couldn't see anything, so I reuploaded the firmware and tried both power cycle and the --reload. I also enabled the additional encoders in my hal file.

Did you power cycle the 7I76EU (or use the --reload command)?
 

Loaded up the firmware, but I'm not seeing the stepgen index-enable pins.  I looked in hal configuration and halcmd show pin in the terminal but I couldn't find them.  Would it make it easier if I picked up another 7i85S so I could have an encoder for each stepgen?  Thanks again for your help.  

Thanks so much. I really appreciate it. I'll load it up and give it a try.

I had assumed it was something I had wrong in my .py file. I'm not bothered by them if they are not really a problem.

OK the Linuxcnc image is Debian with a custom kernel.
The kernel has been configured for the Realtek 8169.
First things:should list the hardware and the driver that is loadedwill list all interfaces whether configured or notwill list any messages related to ethernet devices.
Just thinking aloud, it could be a firmware issue. The Realtek devices can be a bit of a PITA and usually, dont do this yet, a dkms package to suit needs to be installed otherwise latency can be an issue.
Just to let you know I'm connected to my RPi5 in the garage via wifi, the RPi5 is in the Waveshare metal case and surrounded by metal shelving
Once you have all this info please post to forum. Maybe be an idea to redirect the output of each command to a separate file, saves clogging up the forum and makes it easier to read and use grep.
I wouldn't recommend running a cnc machine via a remote connection....just saying.

It's a little odd because muxed cards are intended for encoders, so muxed encoders
and muxed stepgen index signals assume that there are an equal number of stepgens
and encoders. This could be fixed by adding a new pin type (muxed stepgen IDX)
but that would also require LinuxCNC driver changes, at least if done right.  

Here is an attempt:

 

I believe this has the stepgen index mapping the same as yours
for the first 6 indexes (0..5) , but then uses standard encoder pinout
for stepgen index 6 and 7 (since this allows 2 full encoders with shared
stepgen/encoder index pins) 

So you get 8 stepgen index pins, 3 working encoders (2 on the 7I85S and 1 on the 7I76EU)

A disadvantage of this current scheme will be that you need to enable all the encoders
even though only 3 are actually usable. I will take a look at better support for stepgen index
inputs using muxed cards, but as I mentioned, this will require LinuxCNC driver changes

I will take a look at fixing this but as I mentioned