On Monday 19 November 2018 05:21:42 andy pugh wrote: > On Mon, 19 Nov 2018 at 02:40, Gene Heskett <[email protected]> wrote: > > > This is a stepper machine? > > > > Yes. But a pdm spindle setup on the 5i25's p3. > > What firmware should I program the 5i25 with? > > > > The pdf I've pulled and printed doesn't say what the D version is, > > but I'm assuming it means differential inputs are available. > > You don't say what card you are looking at, but in cases where Mesa > offers a "D" version that typically means that it has sinking rather > than sourcing outputs.
So I should order the D version. And I did find that on a re-read. > You might want to consider the possibility that Peter knows what he is > doing, and wouldn't fit optos that limited the performance of his > hardware. I have always done that, but you made me go back and re-read the manual for the 7i76, and only 2 pins are opto isolated, for driving the vfd direction inputs, and opto's are I think more than fast enough for that. So thats clarified and not a concern. I'm getting the impression that I might need only one of these to run my mill, but it would be a whole new hal file, with p2 essentially unused. That, since it would essentially replace the SainSmart bobs at the same time, will take a major re-wiring but I can probably put it all in one box, consolidating some of the mess that like Topsy, has grown up around the big box I originally built to house all the electronics. Darned stuff is never big enough seems to be Murphy's Law. I like that, neater/cleaner. Thanks Andy -- Cheers, Gene Heskett -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) Genes Web page <http://geneslinuxbox.net:6309/gene> _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
