Magnetic Scale with Mesa 7i76e and 7i85

Hello all together,

I am currently in the design process of my new CNC Router and am thinking about putting linear scales on it.

It will be run by Mesa 7i76e which I already have on hand, motors are the common JMC 180W servos, minimum Step size is 0,0002mm.

As the 7i76e only has one encoder input I want to extend it with a 7i85.

For the linear scale I'd like to use the following with RS422 signal and 1um resolution:

de.aliexpress.com/item/32962854503.html?...7,searchweb201603_52


Does this sound reasonable or am i taking the wrong approach? Has someone maybe already experience with the ditron magnetic scale?

Thank you in advance,

Robert

I have 1 µm linear scales on my milling machine, not ditron though.
The 7i85 can do 20 MHz so if you just keep below 20 m/second you should be safe.
Differential signal is ok. Well, I think this should work just fine.

Wow, thank you for the fast response. I will give it a try.

I'm not helping you here but I used Ditron scales on my manual lathe. I thought they were good quality but I paid a lot less than the listing price back in the day.