OK, I got Mach3 to turn on and off using m03 and m05. But can't get the throttle to work. Using Big Tex Blue screen, warp9td usb to parralell, and then to Gecko G540 control. To run the machine. I'm trying to interface the KCIb speed controler VFD. Using the P1, P2, P3 to gG540 terminal connections to 7/8/9. In MDI mode in Mach3 output#1 is on pin 14 which i have amnual control or typing in the M codes. But I can't get mach3 with all the componants to talk to the vfd speed control. The KCIB speed control create it's own power for the vfd signal. Also read alot on other chat forums and tired the setting on motor inputs, output signal, pulley set ups, spindle setup, and messing with all different settings. This motor for the spindle I bought from Sherline to get 1/2 horse power to the machine. Put can't get this mach3 to communicate throught the G540 gecko board.

Tim