Fanuc Power Mate i-D/H Operator Manual

PROGRAMMING
(Common to Power Mate i–D and –H)
B–63174EN/03
5. FEED FUNCTIONS
61
Specify the rate feed mode with G93, and directly specify a tool end
feedrate as a numeric value after F. By using the value of F in the previous
block as the initial value, a constant acceleration or deceleration value is
applied. The unit of the value of F is mm/min or inch/min. G93 is modal.
G93, once specified, remains to be valid until G94 (feed per minute) or
G95 (feed per revolution) is specified.
f
2
F
t
f
0
f
1
f
3
x
1
x
2
x
3
N10 G01 G93 Ff
0
;
N20 Xx
1
Ff
1
;
N30 Xx
2
Ff
2
;
N40 Xx
3
Ff
3
;
Specify an upper feedrate limit at the time of acceleration in parameter
No. 1422 (FEDMX) used to specify an ordinary upper feedrate limit.
Specify a lower feedrate limit at the time of deceleration in parameter
No. 1480 (RFDMN). If no value is specified in this parameter, the
specification of 1000 is assumed.
The unit of the parameter is 0.001 mm/min (in the case of metric input)
or 0.00001 inch/min (in the case of inch input).
In the rate feed mode, an operation at a feedrate (rate feed) lower than
the value specified in this parameter is disabled. Note that if such an
operation is specified, the feedrate of the block is clamped to the value
specified in the parameter.
Example: Suppose that the following program is executed with
parameter No. 1480 = 200000 set in the case of metric
input:
N10 G94 G01 G90 X0 F100. ;
N20 G93 X100.F10. ;
In this case, the feedrate during execution of block N20 is
fixed at 200 mm/min.
Do not set a feedrate override other than 100%.
5.6
RATE FUNCTION
(G93)
Explanations
Upper rate feedrate limit
Lower rate feedrate limit
Prohibitions
Override

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