FANUC Series 16/18/160/180-Model C Machining Center Operators Manual

PROGRAMMING
B–62764EN/01
15. COMPENSATION FUNCTION
263
WARNING
When a manual movement is inserted into a movement at
a measurement federate, return the tool to the!position
before the inserted manual movement for restart.
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. 6241),
deceleration position (parameter No. 6251), and permitted
range of the approach end signal (parameter No. 6254) are
specified by the machine tool builder.
3 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.
4 The approach end signal is monitored usually every 2 ms.
The following measuring error is generated:
ERR
max
. : Fm×1/60×T
S
/1000 where
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
= 1000 mm/min., ERR
max
. = 0.003m
5 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:
Q
max
. = F
m
× 1/60 ×16/1000
Q
max
.: maximum overrun (mm)
F
m
: measurement federate (mm/min.)

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