[Emc-users] 7i84 Trouble?

[Todd Zuercher via Emc-users]

I am working at trying to set up a 7i84 io card on a machine that I am 
refitting and I'm having some trouble with it.

The outputs all seem to be working correctly, but I can only seem to get half 
of the inputs to work.  I have 24v DC to all of the Vin terminals.  The inputs 
on TB2 seem to all be ok.  But the ones on TB3 are not.  In Hal, the 1st 8 
inputs (0-7) all read false (no mater what I connect to them, and the 2nd 8 all 
read true (8-15) no mater what is connected to them.

The 7i84 is connected to the SS port on a 7i85S that is connected to a 5i25.

Any ideas what I might have messed up?   My best guess is that while I was 
wiring up and testing limit switches I may have had a stray loose wire with 24v 
touch against some place it shouldn't have.  (In hind sight, I probably should 
have turned off the 24v while I was working on that.)

Todd Zuercher
P. Graham Dunn Inc.
630 Henry Street
Dalton, Ohio 44618
Phone:  (330)828-2105ext. 2031


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Re: [Emc-users] 7i84 Trouble?

[Peter Wallace]

On Mon, 1 Apr 2024, Todd Zuercher via Emc-users wrote:


Date: Mon, 1 Apr 2024 20:49:01 +
From: Todd Zuercher via Emc-users 
To: "Enhanced Machine Controller (EMC)" 
Cc: Todd Zuercher 
Subject: [Emc-users] 7i84 Trouble?

I am working at trying to set up a 7i84 io card on a machine that I am 
refitting and I'm having some trouble with it.


The outputs all seem to be working correctly, but I can only seem to get 
half of the inputs to work.  I have 24v DC to all of the Vin terminals. 
The inputs on TB2 seem to all be ok.  But the ones on TB3 are not.  In Hal, 
the 1st 8 inputs (0-7) all read false (no mater what I connect to them, and 
the 2nd 8 all read true (8-15) no mater what is connected to them.>

The 7i84 is connected to the SS port on a 7i85S that is connected to a 5i25.

Any ideas what I might have messed up?   My best guess is that while I was 
wiring up and testing limit switches I may have had a stray loose wire with 24v 
touch against some place it shouldn't have.  (In hind sight, I probably should 
have turned off the 24v while I was working on that.)



Do you have both VFIELDA and VFIELDB connected? sounds like an issue there




Todd Zuercher
P. Graham Dunn Inc.
630 Henry Street
Dalton, Ohio 44618
Phone:  (330)828-2105ext. 2031


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Peter Wallace
Mesa Electronics


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