David,
you mention both home and limit switches.
Note that with EMC you can combine home and (of of the) limit switches
on one actual switch.
The good thing on homing is that you can determine the position of your
vise, a fourth axis and maybe other - special - workpiece holders.
EMC, as other CNC controllers, has the possibility to use multiple
coordinate systems each with its own zero (home) point. So if you once
determine the location of the fixed part of your vise, the centre line
of your 4th axis and more you can then easily set your workpiece edge
and start milling.
On the other hand it is good that EMC knows what the limits of the
machine are. These are the soft-limits and allow EMC to slow down before
reaching them. Hitting a hard limit switch results in a sudden stop of
the machine, no ramp down or whatsoever and that is not good for the
mechanics. The hard-limit (switches) are only there in case something
goes really wrong to prevent extreme damage to the machine.
Nesting programs is not done by EMC, that has to be done with your CAM
software (or by hand with some simple G-code programming). In both cases
the user is responsible for making sure that there are no out of bound
XYZ position used. When trying to start a program EMC will warn you when
the program contains out of bound coordinates.
Regards,
Rob
David Braley wrote:
> Hello all,
>
> Working away at researching my Anilam 1100 mill retrofit. Started to
> read the EMC2 Integrators Manual V2.3. Seemed like the most useful
> document for me at the moment. Figured I might learn something, so I
> don't ask too many noob questions. So far so good.
>
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