On Sep 26, 6:59*pm, Karl Townsend
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?

Karl

The suggestions you have received here are all pretty good. I would
add, however, that you ought to "just do it." These kinds of jobs,
while tedious, are often easier than you think. Just dive in, and in
an hour, or a few hours, you'll be done and can move on.

That said, I remember reading, in the early 80s about a Cray
supercomputer that contained thirty MILES of twisted pair 30 gauge
wire wrap wire, all the same color. Talk about yer nightmares.