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

on 2008-04-12 13:47:10 UTC

Monte,
I would suggest you use an opto isolator to isolate it back to your computer.
but in answer to your question yes there needs to be a pull up some where. There may be one
on you breakout board. Don't run anything from a plasma machine/plasma table directly to the parallel port.
Jim

----- Original Message ----
From: Monte <montejw@...>
To: CAD_CAM_EDM_DRO@yahoogroups.com
Sent: Friday, April 11, 2008 1:56:06 PM
Subject: [CAD_CAM_EDM_DRO] Pullup resistor on a NC touch probe, Mach3?

Longtime lurker here. Would a pullup resistor be a good idea on a NC
touch probe? I'm thinking it's just like a limit switch to Mach.
Plus I'm not sure if connecting a NC switch directly to the parallel
port is good. Running Mach3 and the probe is on pin 11. Then, with a
pullup resistor, would it be active low, or high?

Thanks,
Monte

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