On Sun, 26 Sep 2010 17:16:56 -0700, Winston
wrote:

On 9/26/2010 5:03 PM, Ignoramus24898 wrote:
On 2010-09-26, Karl wrote:
I pulled to the old servo drives out of my Matsurra bed mill and got
all the wire run cables separated as much as possible. Most of the I/O
cables have less than ten conductors and you can deduce what they are
for by where the cable run goes.

I have two fifty conductor cables that go to the operator panel. I'm
guessing fifty inputs on the operator panel so there are a great many
more wires than used. I have no manual for this machine and these
wires aren't numbered. Looks like a REAL MESS to figure out the
function of each wire.

Each input is pretty simple, if it is made it conducts voltage. But
doing this many at once becomes a snow storm. Any suggestions on best
approach?

That's a very tough job. I would first invest a lot of effort into
finding a manual and schematic.

Till then, ground your ohmmeter and determine which
of those 50 are 'returns'. That will cut down on
your work *a lot*.

You could discover that you're challenge is *only* 30 connections.

--Winston

I just checked this. On first run, nothing grounded, but I don't have
the dead 6M fanuc computer here, its at the kid's place. Maybe this
cable was grounded on one end at the computer for all the extra
conductors. You're right, if I could eliminate half, the job would be
simpler.