
B–63833EN–1/02
14. MEASUREMENT
829
When a tool is moved to the measurement position by execution of a
command given to the CNC, the CNC automatically measures the
difference between the current coordinate value and the coordinate value
of the command measurement position and uses it as the offset value for
the tool. When the tool has been already offset, it is moved to the
measurement position with that offset value. If the CNC judges that
further offset is needed after calculating the difference between the
coordinate values of the measurement position and the commanded
coordinate values, the current offset value is further offset.
[Classification] Input signal
[Function] If the measuring position specified by a program command differs from
the measuring position which a tool has reached in practice, that is, the
position at the moment the measuring position reached signal has just
been turned “1”, the difference in the coordinate value is added to the
current tool compensation value to update the compensation value. The
tool is first fed to the specified measuring position by rapid traverse in a
block where one of the following commands has been specified:
G37 (M series)
G36, G37 (T series)
14.2
AUTOMATIC TOOL
LENGTH
MEASUREMENT
(M SERIES)/
AUTOMATIC TOOL
OFFSET (T SERIES)
General
Signal
Measuring position
reached signals
XAE<X004#0>,
YAE<X004#1>,
ZAE<X004#2>(M series)
XAE<X004#0>,
ZAE<X004#1>(T series)