More on Encoders&Index

To Jon:

I think you are right. Enable another axis, and read 'what ever'
from the shared memory.
At the moment I have so much to do, and I don't know when I will be
ready to dig into this.

I received my own mail in the digest, - and something was messed
up. Some words were missing, etc.
Sorry, but it reminded me of a problem: Some messages are cut off
at the left margin, so I don't get it
printed out.

Question: What is the common line length that would be best for
this list ?

Back to index & encoders:

Jon, you would like to control the EDM current. I don't know what
you mean with " sinker EDM ",
- I have seen your "wire EDM". I have tried to understand this EDM
thing, and I found something that
looks like you could use a shaped tip. Say you used a circular end
of a pipe, - could you "burn" a hole with
this shape ?

Okay, - I use the "wire EDM" in the following: You would like to
control the height above the surface, - by using
the current. If you are too high, then no current will flow. If you
are too low, then you have a short. I would believe the
distance you are talking about is in the micro area, - why would you
control it with the EMC ?
Well, I do understand that you would need to or want to follow some
path, hence use the EMC, but I would think that the
electrode would need a independent control ?

The way I imagine it, would be something like this: use a power
op-amp in a control loop with a voice coil actuator. You could read
in the "position" with an A/D converter, - and run the Z axis, - but
this would just move it when the value came above some threshold,
the fine movements was up to the voice coil.

Am I just stupid ?

I would very much like to test out the EDM stuff, and I don't know
anything about it.

//ARNE