On Wed, 9 Dec 2020, Sven Wesley wrote:
Date: Wed, 9 Dec 2020 00:53:25 +0100
From: Sven Wesley <[email protected]>
Reply-To: "Enhanced Machine Controller (EMC)"
<[email protected]>
To: "Enhanced Machine Controller (EMC)" <[email protected]>
Subject: Re: [Emc-users] 7i96 multi wire input
Den ons 9 dec. 2020 kl 00:37 skrev Peter C. Wallace <[email protected]>:
On Wed, 9 Dec 2020, Sven Wesley wrote:
Date: Wed, 9 Dec 2020 00:17:11 +0100
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 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 and normal operation.
...
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?
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
Peter Wallace
Mesa Electronics
Hi Peter, thanks for your quick reply!
I'm not sure I am following you, the wire should already be high if it is
in normal state?
There is another pin on the drives for resetting a previous error, it works
the same way and an output should work. Today I use a simple push button
inside the cabinet. :)
/Sven
Yes, the fault pin is normally high and pulled down when a fault occurs
(this allows the fault pins from all axis to be paralleled)
A 7I96 output could be used to reset all drives if desired
A side effect of using a common +5 for the 7I96 inputs is that
you must use a common ground for all limit/home switches etc
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Peter Wallace
Mesa Electronics
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