On Tuesday 08 December 2020 18:17:11 Sven Wesley wrote: > Friends, > > I am in the process of refreshing a CNC that has been running in > "temporary state" the last 12 years, time to give it an overhaul. I've > found the magic little piece we all call 7i96. It will do magic. > > The servo drives have been running flawlessly and the plan is to keep > them. They have a neat error/reset feature via two pins and the old > parallel port BOB supports it. If one drive or an emergency stop is > triggering the stop pin, all drives will be halted by the BOB. > The manual for the drive says: > > > > > > > > *Error line is pin number 6 in the Main connector and is a dual > purpose, bi directional line.This pin is ‘active low’, meaning that > the line is normally high indicating no problems andnormal operation. > The drive will stop if this pin is pulled low (grounded) by one of > thesesources:EXTERNAL activation; The line can be pulled low by an > external source (CNCsoftware, E-stop, etc). .... INTERNAL activation; > The line is pulled low by the drive itself due to a faultcondition.* > > Am I totally off the chart if I wire all the drives' pin number 6 > together and connect them to one of the inputs on the 7i96 and get it > to stop the program with a big alert? And maybe add a mechanical > switch shortcutting to ground for those panic moments?
I would do the parallel but I'd put a 1n914 in series to a common point, So the comon point src could be ID'd, I'd put a super bright led from a 5 volt line to each of the alarm outputs, letting you see at a glance which driver is issueing the alarm. > If I am not totally stupid, what would the Mesa pin config look like? > > All the best, > Sven > > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users 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) If we desire respect for the law, we must first make the law respectable. - Louis D. Brandeis Genes Web page <http://geneslinuxbox.net:6309/gene> _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
