On Wed, 9 Dec 2020, Sven Wesley wrote:
Date: Wed, 9 Dec 2020 00:17:11 +0100 From: Sven Wesley <svenne.d...@gmail.com> Reply-To: "Enhanced Machine Controller (EMC)" <emc-users@lists.sourceforge.net> To: "Enhanced Machine Controller (EMC)" <emc-users@lists.sourceforge.net> Subject: [Emc-users] 7i96 multi wire inputFriends,
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? If I am not totally stupid, what would the Mesa pin config look like? All the best, Sven I think this is possible if you wire the 7I96 input commom to +5V so the can sense a logic low. You could also use a 7I96 output to short the fault pin to ground if you wanted a software reset capability _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net 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.
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