On 24 August 2013 18:59, aaron moore <[email protected]> wrote: > I have NPN 6-30vdc proximity switches. The breakout board is a very basic 25 > way routout model so old I can't seem to google it.
So, purely a physical interface, no optos or anything like that. First, with nothing connected and using a multimeter check that the parallel port input pin sits at +5V. Then short it to one of the 0V pins with a bit of wire and check that doing that changes the state of the input in the software. Then make sure that the voltage measured between the prox output wire and the prox 0V wire is always less than 5V both with the prox switched and not-switched. (I just checked, and that is the case for mine). If all that works then you should be able to connect the prox output wire to the parport, even though the prox is working at 12V. -- atp If you can't fix it, you don't own it. http://www.ifixit.com/Manifesto ------------------------------------------------------------------------------ Introducing Performance Central, a new site from SourceForge and AppDynamics. Performance Central is your source for news, insights, analysis and resources for efficient Application Performance Management. Visit us today! http://pubads.g.doubleclick.net/gampad/clk?id=48897511&iu=/4140/ostg.clktrk _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
