They are not lit. And do not light when the switches are cycled. Changing the active state will make them light in the diagnostics screen but cycling the switch will not turn them off. Also, a parmon parallel port monitor does not show any activity for inputs. But it does show activity for my outputs (step and dir).
At my break out board I have 5v feeding the homing switch circuit. The switches are wired N.C. and in series. I can monitor the voltage droping to 0v with a DMM when I cycle the switch, so there should be an input signal for mach3 to see.
I want to check the voltage at pin#10 at the parralel port cable where it plugs into the computer. If the input signal is getting this far, then the computer is at fault (either the port itself or the driver).
It is a Dell Dimension 4600, the parralel port is on the motherboard. And I have read on other posts where the parallel ports may have been the cause of trouble. If I see voltage all the way to the computer, then I guess I will buy a PCI card with a parallel port.
Thanks for the help!!!
Scott