On 25 October 2016 at 04:09, Danny Miller <dan...@austin.rr.com> wrote: > > Second, I ended up with the NPN proximity sensors shown here on the top > left: > > https://oceancontrols.com.au/IBS-0051.html > > Those are insidiously awkward to interface,
Why? You feed them with 24V for power, and their output is a switch-to-gnd which can go straight to parallel port or Mesa-card input (or any other input with a pull-up) PNP is troublesome, but NPN is easy. -- atp "A motorcycle is a bicycle with a pandemonium attachment and is designed for the especial use of mechanical geniuses, daredevils and lunatics." — George Fitch, Atlanta Constitution Newspaper, 1916 ------------------------------------------------------------------------------ The Command Line: Reinvented for Modern Developers Did the resurgence of CLI tooling catch you by surprise? Reconnect with the command line and become more productive. Learn the new .NET and ASP.NET CLI. Get your free copy! http://sdm.link/telerik _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
