Mitsubishi Electric MELDAS C6 Programming Manual page 314

15. Measurement Support Functions
Detailed description
(1) Operation with G37 command
Speed
Measuring
position
Stop point
Sensor
output
(2) The sensor signal (measuring position arrival signal) is used in common with the skip signal.
(3) The feedrate will be 1mm/min if the F command and parameter measurement speed are 0.
(4) An updated offset amount is valid unless it is assigned from the following Z axis (measurement
axis) command of the G37 command.
(5) Excluding the corresponding values at the PLC side, the delay and fluctuations in the sensor
signal processing range from 0 to 0.2ms.
As a result, the measuring error shown below is caused.
Maximum measuring error (mm) = Measuring speed (mm/min) •
(6) The machine position coordinates at that point in time are ready by sensor signal detection,
and the machine will overtravel and stop at a position equivalent to the servo droop.
Maximum overtravel (mm)
= Measuring speed (mm/min) •
The standard position loop gain is 33 (s
15.1 Automatic tool length measurement
Rapid traverse rate
Distance
Operation 1
Operation 2
Operation 3
1
•
60
− 1
306
Measurement
allowable range
D(d) D(d)
F(Fp)
R(r)
Offset amount
Or no detection
1
− 1
Position loop gain (s
).
Normal completion
Alarm stop (P607)
Alarm stop (P607)
1 0.2 (ms)
•
60 1000
)