Gentlemen,
A lights out machine using probing will have XY registers for each
tool's probing position. This will allow any tool to be probed. They
will usually probe the tool after every tool change to detect broken
tools.
This will also verify the correct tool is in the spindle. An
operator can change a tool in the magazine and put the wrong tool in
the magazine pot. This check is not certain but not many times will
the tool length and XY check position match to the precision necessary
to allow the machine to continue with that tool.
thanks
Stuart
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