
13.MEASUREMENT B-63783EN-1/01
- 1390 -
[Operation] When the signal is turned "1", the control unit works as follows:
- 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 G37 is specified after the tool is within distance e
of the measuring position specified by a program and before the
tool overshoots the measuring position by distance e. The control
unit then stops the tool, and terminates the move command for the
block.
- 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 G37 is specified
after the tool is within distance g of the measuring position but
before the tool is within distance e of the measuring position.
NOTE
1 The measuring position reached signal requires at least 10
msec.
2 The delay and dispersion of measurement position reach
signal detection is 0 to 2 msec on the CNC alone,
excluding those on the PCM. Thus, the measurement
error is equal to the sum of 2 msec and the delay and
dispersion of the transfer of the skip signal on the PMC
(including the delay and dispersion of the receiver)
multiplied by the feedrate set for parameter No. 7311.
3 After measurement position reach signal detection, the
delay and dispersion that may occur until the feed is
stopped is 0 to 8 msec.
4 The CNC directly reads the skip signal XAE1<X008#3>
from the machine tool; the PMC no longer requires to
process the signal.
5 If automatic tool length measurement is not used, the
PMC can use the signal terminals corresponding to the
measuring position reached signal as the general-purpose
input signals.
6 Instead of the rise, the state of the measurement position
reach signal is monitored. If, therefore, the measurement
position reach signal remains "1" and the corresponding
automatic tool length measurement (G37) is executed, the
CNC will issue alarm PS0415 before the measurement
position, when the tool has moved to position γ.
Signal address
#7 #6 #5 #4 #3 #2 #1 #0
X008 XAE1
#7 #6 #5 #4 #3 #2 #1 #0
G001 AE1