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

B-63324EN/03 PROGRAMMING 13.FUNCTIONS TO SIMPLIFY PROGRAMMING
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- Feedrate command
As indicated in the table below, the function of an F command with a
decimal point depends on the setting of bit 3 (RFA) of parameter No.
6201 and bit 7 (RFE) of parameter No. 6201.
Table 13.2.1 (b) Feedrate Command
Example of F
command
F10.0 or F10.0 F10.5
RFA = 1, RFE = 0 or 1 F10.0 The PS530 alarm (incorrect use of a
decimal point) is issued.
RFA=0, RFE=0 F10.0 F10.0
RFA=0, RFE=1 F10.0 F10.5
CAUTION
If an inch input is used, an F command with no
decimal point is assumed to have a decimal point
between the second and third digits in it as counted
from the least significant digit. If RFA=0/RFE=0 is
specified, therefore, note the following point:
Example
Z-axis feedrate 1000 mm/min
Spindle speed 1000 min
-1
Thread lead 1.0 mm
<Programming of feed per minute>
G94 ; Specify a feed-per-minute
command.
G00 X120.0 Y100.0 ; Positioning
G84.2 Z-100.0 R-20.0 F1000 S1000 ; Rigid tapping
<Programming of feed per revolution>
G95 ; Specify a feed-per-revolution
command.
G00 X120.0 Y100.0 ; Positioning
G84.2 Z-100.0 R-20.0 F1.0 S1000 ; Rigid tapping
CAUTION
Ensure that the tapper thread pitch matches a
programmed pitch (F, S). Otherwise, the tool or a
part being machined may be destroyed.

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