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

PROGRAMMING
B–62764EN/01
14. FUNCTIONS TO SIMPLIFY
PROGRAMMING
217
After positioning along the X– and Y–axes, rapid traverse is performed
to point R. From point R, cutting is performed with depth Q (depth of cut
for each cutting feed), then the tool is retracted by distance d. The DOV
bit (bit 4) of parameter 5200 specifies whether retraction can be
overridden or not. When point Z has been reached, the spindle is stopped,
then rotated in the reverse direction for retraction.
Set the retraction distance, d, in parameter 5213.
After positioning along the X– and Y–axes, rapid traverse is performed
to point R level. From point R, cutting is performed with depth Q (depth
of cut for each cutting feed), then a return is performed to point R. The
DOV bit (bit 4) of parameter 5200 specifies whether the retraction can be
overridden or not. The moving of rapid traverse is performed from point
R to a position distance d from the end point of the last cutting, which is
where cutting is restarted. For this moving of rapid traverse, the
specification of the DOV bit (bit 4) of parameter 5200 is also valid. When
point Z has been reached, the spindle is stopped, then rotated in the reverse
direction for retraction.
Set d (distance to the point at which cutting is started) in parameter 5213.
Before the drilling axis can be changed, the canned cycle must be
canceled. If the drilling axis is changed in rigid mode, P/S alarm (No.
206) is issued.
Specifying a rotation speed exceeding the maximum speed for the gear
used causes P/S alarm (No. 200).
For an analog spindle control circuit:
Upon specifying a speed command requiring more than 4096 pulses, in
detection units, within 8 ms, a P/S alarm (No.202) is issued because the
result of such an operation is unpredictable.
For a serial spindle:
Upon specifying a speed command requiring more than 32767 pulses, in
detection units, within 8 ms, a P/S alarm (No.202) is issued because the
result of such an operation is unpredictable.
Specifying a value that exceeds the upper limit of cutting feedrate causes
alarm (No. 011).
Metric input Inch input Remarks
G94 1 mm/min 0.01 inch/min Decimal point programming
allowed
G95 0.01 mm/rev 0.0001 inch/rev Decimal point programming
allowed
Specifying an S command or axis movement between M29 and G84
causes P/S alarm (No. 203).
Then, specifying M29 in the tapping cycle causes P/S alarm (No. 204).
Specify Q and R in a block that performs drilling. If they are specified
in a block that does not perform drilling, they are not stored as modal data.
When Q0 is specified, the peck rigid tapping cycle is not performed.
Explanations
D High–speed peck
tapping cycle
D Peck tapping cycle
Limitations
D Axis switching
D S command
D Distribution amount for
the spindle
D F command
D Unit of F
D M29
D Q/R

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