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I was wondering if there was anywhere that would compare the hal files before and after the modifications? It gets confusing as I am not sure if things need to be only added to sections or totally replaced altogether.
I followed up to that point, but now I am kind of stuck.

Thanks

Been spending the last day or so in an attempt to configure the external E-stop. I found this - www.forum.linuxcnc.org/18-computer/44828...rd?start=2080#324903 - and tried to place that into my .hal file (the basic stock one that is in the repo - github.com/scottalford75/Remora-RT1052-c...sic/remora-ec500.hal) like I was able to do for the limit switches and got several already active errors. Commenting those offending lines out allowed the gui to run but no working E-stop. I looked here - remora-docs.readthedocs.io/en/latest/software/hal-examples.html - and there is no mention of E-stop.

I am thinking that the E-stop needs to be set up in some manner similar to the limit switches like this -[/code]

i asked ChatGPT about the boards, and it said I should use the 7i76e for axis control, the 7i85 for secondary axes, and the 7i89 for encoders.
Is this configuration correct?I also want to add some information about the servo motors I'm planning to buy.
I don't fully understand all the technical details, but if there is anything wrong or incompatible, I would really appreciate it if you could let me know.
Thank you!  

drive.google.com/file/d/1As0Eivp9ck6G0jz.../view?usp=drive_link
 

Thank you very much for your detailed and informative response. After considering the complexity and high cost of EtherCAT, I have decided not to pursue that route. Fortunately, I have also found a way to purchase hardware from abroad. There is a platform where international travelers can register and, for a fee, purchase and deliver requested items. While this service is slightly more expensive, I believe it is worth it. At this stage, I am planning to build a 5-axis CNC machine with an automatic tool changer. I would greatly appreciate it if you could recommend a suitable Mesa board setup for this application. Here are my key requirements: Full Ethernet-based control (no PCI required) Toll changer  Support for 5 axes with servo motors In the future, I would like to add linear scales (linear encoders) for closed-loop feedback  Unfortunately, I am not very familiar with the Mesa product lineup, so a specific recommendation or example configuration would be very helpful. Thank you in advance for your support.