Re: Pullup resistor on a NC touch probe, Mach3?

Arnie,
I've used the probe hooked directly to the pport, it worked fine. The
reason I asked is I was thinking "what's the difference between a NC
touch probe and a NC limit switch?" Not much I would think, and it is
pretty much a given that limit switches are to be wired with a pullup
resistor. Hence the query. More of "am I doing harm to the computer
or touch probe?" sort of question.

Monte

>
> Monte,
>
> Let me know how it works out for you, I don't get a lot of feedback
> from the users I sell probes to and it might help others with their
> hookups
> I am using a breakout board with mine that uses a pullup resistor but
> I have noticed if I don't even turn on my controller, just turning on
> the computer that the controller plugs into its parallel port, the
> probe still registers just fine. The LED works just powered from the
> floating input pin.
>
> Arnie
>