Lathe Spindle Encoder: What are the options for EtherCAT?

Both machines were put up for sale because the workshop they were in was damaged in a strike. I bought them and I've been slowly rebuilding them since. Here are a few photos from my archive.
As for the specs: Both the lathe and the mill have ballscrews on all axes. The spindles are equipped with monoblock induction motors paired with VFDs (the HS - High Speed version).
On the lathe, I initially wired the spindle via a 0-10V analog signal because I couldn't figure out the RS485 character-based text protocol at the time. However, I finally cracked it this year. Thanks to AI, I managed to write a driver. I used the mill's motor for testing. I’ll be integrating this solution into the lathe a bit later.
So, I’d be glad to hear any advice and look forward to the discussion!
 

Hi everyone, 

I just received my Omron NX-ECC201 today. The first thing I did was verify that it works, and I couldn't resist playing around with it a bit—I successfully toggled the LEDs on the output module directly from a Linux terminal via EtherCAT. 

Now I am planning the next steps for my machine setup. I need to process an encoder signal, and after doing some research, it seems that the NX-EC0222 or NX-EC0122 modules would be the best fit since they support differential signals. 

However, my current machine encoder operates on a 5V TTL signal. This leaves me with two main options: 

1. Convert the 5V TTL signal up to 24V single-ended.
2. Convert the 5V TTL signal into a differential signal to feed it directly into the NX-EC0222.

I am leaning towards the second option (differential) because I feel it is much more noise-immune and future-proof for upcoming retrofit projects. 

I would really appreciate your advice on choosing the best Omron module for this setup to help me narrow down my search. 

Thanks in advance!
 

Quick update: I made a mistake with the part numbers in my previous post. 

The NX-EC0222 and NX-EC0122 modules do not support differential signals. The correct Omron modules for a differential line driver setup are actually the NX-EC0132 or NX-EC0142. 

Also, I'm interested in pairing one of these encoder modules with an NX-DA3605 analog output module to control a heavy-duty CNC lathe spindle via ±10V (both for speed and C-axis positioning), as I have an eye on one such analog module. Has anyone here tried this specific combination? Any success or failure stories with this setup?