On Sun, 12 Jan 2014, Marius Alksnys wrote: > Date: Sun, 12 Jan 2014 18:40:55 +0200 > From: Marius Alksnys <[email protected]> > Reply-To: "Enhanced Machine Controller (EMC)" > <[email protected]> > To: [email protected] > Subject: Re: [Emc-users] Hostmot2, MESA 5i25: pins toggle on startup > > I am sure it is so - they are active low. These boards are simple > opto-isolators with 817. Their "+" inputs are connected to +5V and "-" > to MESA IO pins. > There are LED indicators on each of those channels. And they blink at > LinuxCNC startup for part of a second. > I didn't try is_opendrain option yet..
What configuration and which pins are you using? (I do know sserial must be specifically disabled in the config line to prevent I/O twiddling at startup) > > On 2014.01.11 23:34, Peter C. Wallace wrote: >> You should make sure that you use the outputs in an active low configuration >> since they will be high at startup. > > > > ------------------------------------------------------------------------------ > CenturyLink Cloud: The Leader in Enterprise Cloud Services. > Learn Why More Businesses Are Choosing CenturyLink Cloud For > Critical Workloads, Development Environments & Everything In Between. > Get a Quote or Start a Free Trial Today. > http://pubads.g.doubleclick.net/gampad/clk?id=119420431&iu=/4140/ostg.clktrk > _______________________________________________ > Emc-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/emc-users > Peter Wallace Mesa Electronics (\__/) (='.'=) This is Bunny. Copy and paste bunny into your (")_(") signature to help him gain world domination. ------------------------------------------------------------------------------ CenturyLink Cloud: The Leader in Enterprise Cloud Services. Learn Why More Businesses Are Choosing CenturyLink Cloud For Critical Workloads, Development Environments & Everything In Between. Get a Quote or Start a Free Trial Today. http://pubads.g.doubleclick.net/gampad/clk?id=119420431&iu=/4140/ostg.clktrk _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
