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

PROGRAMMING
14. FUNCTIONS TO SIMPLIFY
PROGRAMMING
B–62764EN/01
214
In feed–per–minute mode, the thread lead is obtained from the
expression, feedrate
× spindle speed. In feed–per–revolution mode, the
thread lead equals the feedrate.
If a tool length offset (G43, G44, or G49) is specified in the canned cycle,
the offset is applied at the time of positioning to point R.
Rigid tapping can be performed using FS15–format commands. Rigid
tapping (Including data transfer to and from the PMC) is performed
according to the sequence for the FS16/18.
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
P/S 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 R in a block that performs drilling. If R is specified in a
non–drilling block, it ss not stored as modal data.
Do not specify a group 01 G code (G00 to G03) and G73 in the same block.
If they are specified together, G73 is canceled.
In the canned cycle mode, tool offsets are ignored.
D Thread lead
D Tool length
compensation
D FS15–format command
Limitations
D Axis switching
D S command
D Distribution amount for
the spindle
D F command
D Unit of F command
D M29
D R
D Cancel
D Tool offset

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