On 2010-06-26, Pete C. wrote:
Ignoramus31989 wrote:
On 2010-06-26, Karl Townsend wrote:
9. Pot for axis feed rate. change feed while running program.

nope

Most "real" machines don't have this either. What they do typically have
is a rotary switch providing feed rate override capability in 10% steps
+/- some decent range. This allows the machine operator to tweak the
feed rates to match the real world cutting conditions, slightly dulling
tools, etc. vs. the ideal conditions the person who generated the G-code
wrote it for.

I can do that from keyboard, it seems more industrial in nature.

12. six limit switches

got only five

That is sufficient generally. The control doesn't really have to know
which direction the overtravel was, as long as you can hold the
momentary limit override toggle switch and manually jog the axis back
off the limit. This is how most real machines operate. Many have three
limit LEDs next to the limit override toggle switch to show which axis
is on a limit as it can sometimes be difficult to tell if more than one
axis is at the end of travel.

But this means that, for homing with limit switches, theq limit
switches should not automatically inhibit drives via the inhibit
function, right? At least on my Y axis with only one limit switch?
And so, EMC should be responsible for proper behavior when limits are
reached. Right?

i