motion master going granite

[Montabelli]

I am in the process of re outfitting an old motion master cnc to run with vxd xe 160v drives and a vesdepi interface card. I have an old e stop switch which is normally closed. There is a diagram in the manuals to wire a normally open switch but it uses the external relay buss as well, is there a way to wire the normally closed switch and not use the relay position, or will the external relay still work?

I am just about to the point of testing the fanuc motors in the machine. I am starting with mach3 as the controller, I am wondering if it would be best to also get a smooth stepper board. to insure the most consistent timing for the operation of the unit. ultimately it will be a 4 axis unit with the 4th axis lying along the x axis in the configuration of a lathe.

evidently I have posted this in the wrong place, I meant to post it under granite devices