Fanuc Series 15i/150i-MA (Programming) Operators Manual

B-63324EN/03 PROGRAMMING 16.MEASUREMENT FUNCTIOM
- 573 -
NOTE
1 When an H code is specified in the same block as
G37, an alarm is generated. Specify H code before
the block!of G37.
2 The measurement speed (parameter No. 7311),
deceleration position (parameter No. 7321), and
permitted range of the approach end signal
(parameter No. 7331) are specified by the machine
tool builder.
3 Enter data that satisfies the following condition:
deceleration position > allowable measurement
position arrival signal range.
4 When offset memory A is used, the offset value is
changed.
When offset memory B is used, the tool wear
compensation value is changed.
When offset memory C is used, the tool wear
compensation value for the H code is changed.
5 The approach end signal is monitored usually every 2
ms. When the high-speed measurement position
arrival signal is used, monitoring is performed at
intervals of 0.1 ms or less. The following measuring
error is generated
1T
S
ERR
max
= F
m
×
60
×
1000
T
S
:Sampling period, for usual 2(ms)
ERR
max
:maximum measuring error (mm)
F
m
:measurement federate (mm/min)
For example, when F
m
=100mm/min Fm = 1000
mm/min., ERRmax= 0.003m
6 The tool stops a maximum of 16 ms after the approach
end signal is detected. But the value of the
position!at which the approach end signal was
detected (note the value when the tool stopped) is
used to determine the offset amount. The overrun for
16 ms is:
116
Q
max
= F
m
×
60
×
1000
Q
max
:maximum overrun (mm)
F
m
:measurement federate (mm/min)
7 When using this function, set bit 0 (EV0) of parameter
No. 6000 to 0. (If the offset is changed, the change
becomes effective for all blocks starting with that
specifying the next D code or H code (or T code for a
lathe system).

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