Thor, or should that be Zeus?

[Neale]

I agree with comments re inverter - without studying the manual and doing some parameter reconfiguration (and if the manual is in the same Chinglish as the HY manuals, that's not easy) it probably won't work out of the box.

IP/A - assuming that the digital I/o is the same as my IP/M, which seems likely - Mach3 can handle all the inputs, no problem. If you add one of the I/o extenders, it can handle those as well, so number of ports is not an issue. So, you could use separate limit+/limit-/home switches on each axis. On my own machine, I use a single switch for home/limit at one end plus another switch for upper limit on X and Y. For X and Y, I wire both switches in series (it's slightly more complicated than that but effectively that's what happens) so I only need three IP/M inputs. Wiring proximity switches in series works fine using the 24V supply you need for the IP/M. That's with NPN n/c proximity switches so I get the fail-safe effect of series switch wiring - any wiring fault and the limit switch appears to have tripped. You can use n/o switches in parallel but of course you lose the fail-safe feature. Keeping X, Y, and Z switches on separate inputs means that you can home two or three axes at the same time (I home Z to get it to safe height then X and Y together)