USB/Ethernet controller for Mach3/4 advice

[JAZZCNC]

Thanks Jazz, now I'm a bit confused, not sure which one is better to use, the analog or digital...

There is no best really both will work and perform just the same. Only difference (other than no Step/dir) is with the IP-A version you'll get encoder feedback to the controller so will know the exact positon of the motors. It won't make it any more accurate than IP-S.

If you plan to ever use Steppers or drives with Step/Dir then go with IP-S.

Me persoanlly if using servo's with -10/+10v I'd be using IP-A for the Encoder feedback but I'd happily run the IP-S which I do on my own machine.

Edit: Where the IP-A does win over the IP-S is if your using Spindle with encoder as it can control the spindle rotation/position for things like ridged tapping. This is why they are often used on lathe retro fits or industrial Mills with ATC/Ridged tapping.