Siemens SINUMERIK 840D sl, Function Manual

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Detailed description
2.1 Path feedrate F
Basic logic functions: Feeds (V1)
Function Manual, 11/2006, 6FC5397-0BP10-2BA0
11
Programming example:
. .. .. G94 ....
Selection of feedrate type (mm/min)
X30 Y20 F200
Path feedrate = 200 mm/s
FL[Z]=50 Z-30
Max. feedrate for Z axis: 50 mm/s
2.1.2 Type of feedrate G93, G94, G95
Effectivity
The feedrate types
G93
,
G94
,
G95
are active for the G functions of group 1 (except
G0
) in the
automatic modes.
G94
or
G95
can be used for traversing in JOG mode.
References:
/FB2/ Function Manual, Extended Functions; Jog With/Without Handwheel (H1)
Reciprocal feedrate (G93) (applies only to 840D/810D)
The inverse-time feedrate is used when it is easier to program the duration, rather than the
feedrate, for retraction of a block.
The inverse-time feedrate is calculated from the following formula:
Y
) )>PLQ@
V
F: Inverse-time feedrate
v: Required path velocity in mm/min or inch/min Where
s: Path length in mm/inch
Programming example:
N10 G1 G93X100 Y200 F2
; The programmed path is traversed in 0.5 min.
Note
G93
may not be used when
G41/G42
is active. If the block length varies greatly from block to
block, a new
F
value should be programmed in each block for
G93
.