On Sun, 24 Aug 2014, John Alexander Stewart wrote: > Date: Sun, 24 Aug 2014 15:34:59 -0400 > From: John Alexander Stewart <[email protected]> > Reply-To: "Enhanced Machine Controller (EMC)" > <[email protected]> > To: "Enhanced Machine Controller (EMC)" <[email protected]> > Subject: Re: [Emc-users] Debugging help for 5i25/7i76 combo > > Hi David, Marius; > > and what connectons are you using on the stepper drives , as these have >> optos , do you have the + positive side of pulse and direction and enable >> tied to 5+ >> with the neg sides connected to the 7i76 use STEP0- PIN2 and DIR0- the >> enable lines can all go together to a single amplifier enable pin >> put for now leave it disconnected >> > > Hmmm - I see what you are saying. I wired for each axis (X shown): > step0- to PUL- on DM856 > step0+ to PUL+ on DM856 > dir0- to DIR- on DM856 > dir0+ to DIR+ on DM856 > > ENA+ and ENA- on DM856 currently floating. > > It was my attempt of running balanced, with twisted pair between 7i76 and > drivers. > > I'll try tying the + side of pulse, direction, and enable high, and report > back. > > Marius - right now I'm using pncconf - will try the above before digging in > to the config files. > > Thank you: JohnS.
Differential (balanced) should be better as far as noise immunity goes so that wiring should be fine (assuming the steps are positive edge triggered) > ------------------------------------------------------------------------------ > Slashdot TV. > Video for Nerds. Stuff that matters. > http://tv.slashdot.org/ > _______________________________________________ > 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. ------------------------------------------------------------------------------ Slashdot TV. Video for Nerds. Stuff that matters. http://tv.slashdot.org/ _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
