
B–64113EN–1/01
14. MEASUREMENT
949
The tool decelerates and temporarily stops at the distance γ before the
measuring position.
The tool then moves to the measuring position at the speed preset by a
parameter No. 6241. If the measuring position reached signal
corresponding to the G code is turned “1” after the tool has approached
within distance ε of the measuring position and before the tool overshoots
the measuring position by distance ε, the control unit updates the
compensation value and terminates the move command for the block. If
the measuring position reached signal is not turned “1” even after the tool
has overshot the measuring position by distance ε, the control unit enters
an alarm state and terminates the move command for the block without
updating the compensation value.
e
g
e
Feedrate
Start point
Rapid traverse
Rapid traverse rate
Presumed
measuring position
Measuring speed
Measuring position reached signal
[Operation] When the signal is turned “1”, the control unit works as follows:
D Reads the position of the tool along the axis currently specified and
updates the current compensation value based on the difference
between the specified measuring position and the read measuring
position in the following case: When the measuring position reached
signal corresponding to the G code is turned on in a block where G36
(T series) or G37 is specified after the tool is within distance ε of the
measuring position specified by a program and before the tool
overshoots the measuring position by distance ε. The control unit then
stops the tool, and terminates the move command for the block.
D Enters an alarm state and terminates the move command for the block
without updating the compensation value in the following case: When
the measuring position reached signal corresponding to the command
is turned “1” in a block where G36 (T series), G37 is specified after
the tool is within distance γ of the measuring position but before the
tool is within distance ε of the measuring position.
D The control unit does not monitor the measuring position reached
signal for its rising edge but monitors the state of the signal. If the
signal remains “1” when the next corresponding automatic tool length
measurement (automatic tool offset) is specified, the control unit
enters an alarm state when the tool is within distance γ of the
measuring position.