I have 4 lathes and 4 mills what i do is put the set up at the head of the program that way you can have a print out of it and it is in the machine as well it works very well for us if you have 2 different machines just make side notes in the setups, as for linking them you need a good comunication software with the amount of machines you have you can use i com. and get a switch box and just set all your baud rates the same, now if you want to spend the money you can get wireless coms. witch i think is a better way to go i havent forked out the money yet but i plan to "i use Multi DNC for my comunications i like it it has back plot, time est., calculator there are several to choice from
individual who perceives a solution and is willing to take command. Very often, that individual is crazy.