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

PROGRAMMING
B–62764EN/01
14. FUNCTIONS TO SIMPLIFY
PROGRAMMING
211
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 speed.
If a tool length compensation (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.
If a speed higher than the maximum speed for the gear being used is
specified, P/S alarm (No. 200) is issued.
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.
If a value exceeding the upper limit of cutting feedrate is specified, P/S
alarm (No. 011) is issued.
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
If an S command and axis movement are specified between M29 and G84,
P/S alarm (No. 203) is issued. If M29 is specified in a tapping cycle, P/S
alarm (No. 204) is issued.
Specify R in a block that performs drilling. If R is specified in a
non–drilling block, it is 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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