I am getting my mill up and running. Problem is I took it apart three years ago and am just now putting it together. There are two green wires in the connecter box behind the control panel, one comes from the control panel, the other goest into the main power box. I remember them being joined together but........ do they connect to the ground terminal in the buss bar? bottom lugs,there is a jumper to terminal #33 to ground lug but nothing else is connected to the ground lug.
Also I want to run this mill off a PC any help would be appreciated. I am decent on hand wheels and have learned g-code on my Maxnc 15 CL, but I'm just getting into computer control.
My R2E3 has two green wires, both marked GND, in the wire conduit coming from the big box at the back. A power supply was also in there, but I replaced both logic power supplies with a single one in the back box. Anyway, one wire goes to the RFI, the other goes to the bottom of the vertical connector bus. Suggest you trace your wires back to their sources to determine their functions.
I have a part program loader that runs under Win98SE. And the passwords that allow you into the FIST monitor, described in chapter 8 of Installation and Maintenance. These allow you to set backlash compensation without using those silly pots, among other things. I never tried using the instructions given in 8.1.1, rather made a circuit to convert RS422 to RS232.