Re: [CAD_CAM_EDM_DRO] Re: Turning Spindle Off and On

It will disable the out signals in the absents of the charge pump signal
form Mach2.
This signal is a tone of about 13 kHz. When Mach2 is reset the signal
appears and the out puts are enabled. If Mach2 isn't running then you get
nothing out.
Jim

----- Original Message -----
From: "turbulatordude" <dave_mucha@...>
To: <CAD_CAM_EDM_DRO@yahoogroups.com>
Sent: Thursday, December 16, 2004 7:39 PM
Subject: [CAD_CAM_EDM_DRO] Re: Turning Spindle Off and On


>
>
>
> > ///What about opto-isolation? Wouldnt there be a risk of damaging
> the PC electronics wiring up auxillary equiptment directly to the
> port?
>
>
> All the SSR's I have looked at have opto isolation as well as do
> Gecko's.
>
>
> The Cambell board does offer additional features that may or may not
> be required.
>
> There are a lot of people who wire directly into the port, from
> electronics hobbyists, to telescope people to machine tool people.
>
> Also, for my machines on machine tools, I keep them dedicated and
> simple software loaded.
>
> If you plan to surf the internet and use your machine as a general
> purpose machine, while you use your Bridgeport, you accept the risk
> of a virus doing bad things as well as having your registry cluttered.
>
>
> > Other breakout boards have the ability to control Solid state
> relays however like the PMDX has no "watchdog" feature that monitors
> erroneous pulses from the PC (it didn't two years ago anyway and they
> didn't sound too concerned about changing it).
>
>
> I'm not sure what signal the Cambell board does that differentiates a
> signal to the port from an erroneous signal.
>
> Dave
>
>
>
>
>
>
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