I've checked the forums until my head hurt and am not getting anything.
I had my Mach3 setup to run my 2.2KW spindle using the PWM and a G540, it was working fine until recently, now if I check the output voltage that goes to the VFD, it's always ~8.4 volts with a 10v input to the G540, I checked pin 14 on the parallel port with a scope and it's a 25khz signal at 50/50 duty cycle, it does not change at all, it's just a nice square wave, I'm running out of ideas, what happened to Mach3, as I said it was working ?
Any help would be appreciated.
Thanks,
John