Hi,
the ESS uses Ethernet to connect to the PC and it generates signals which are output via the three
IDC parallel port headers. You connect an IDC cable from a parallel port header on the ESS to the
parallel input of the MB02 breakout board. There are three parallel port IDC headers on the ESS so you can
have up to three MB02 breakout boards fitted for a total of 51 inputs and outputs.

As for Mach4, i cant use it as i have purchased an Auto Tool Changer Screenset which works perfectly for my router tools and I cant use this on Mach4 so Mach3 it is for some time. 

What......and Mach4 can't handle ATC?. Rubbish.

Craig