I know this is probably my own fault for not having limit and home switches
(yet)
But I keep getting headaches from the Axis behavior of the touch off
function in Axis.
When I move my zero position finder and then try to do a touch off with 4mm
to get the home coordinate, suddenly the OK button in the touch off window
becomes grayed out.
It works sometimes but not ever. Is there some kind of dependency on
previous homing sequences?
having this problem I started to use the G92 in the MDI window. I wanted to
try this anyway because I want to automate this procedure using a probe to
prevent any future problems (I just crashed my $75 LED homing sensor due to
having the wrong increment set when moving ...).
It looks like this made the problem worse: I can't even do a normal homing
anymore after using G92.
A short example:
I switch on the machine and do a normal homing using the home button, now
X=0. I do a touch off (using G92 X-4), do my milling and prepare for a
second job. When I now press the home button then X becomes -4 (the value of
the G92 command)
This looks OK but when I now move the X-axis 1 mm further and do a new G92
X-4 command then pressing the home button sets X to -5.
Some of my work involves a concatenation of multiple milling programs (using
absolute coordinates) where I placed a sequence like "G0 X100, G92 X0" on
two lines in between the different programs. in this way I get multiple
parts out of one sheet.
Things get worse now. When I stop in the middle of a program using multiple
G92 commands, the home position is not what I expect it to be (i.e. the one
defined by the last G92 command).
Am I just misusing a feature here or is this something which is fixed in a
newer release?
Regards,
Rob
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