V1: Feedrates
17.4 Feedrate control
Basic Functions
Function Manual, 09/2011, 6FC5397-0BP40-2BA0
1405
•
FRCM=0
activates the feedrate programmed in
F
for the chamfer/rounding.
• If
FRCM
is programmed, the
FRCM
value must be reprogrammed, equivalent to
F
, on a
G94
↔
G95
change, etc.
If only
F
is reprogrammed and
FRCM
> 0 before the feedrate type is changed, error message 10860 (no
feedrate programmed) appears.
17.4.9
Non-modal feedrate FB
General
A separate feedrate can be specified for a single block with the command
FB
(Feed Block). The previously active
path feedrate is overwritten for this block. After this block, the previous modal path feedrate is active again.
Function
The non-modal feedrate is programmed with
FB=<value>
.
The feedrate is interpreted according to the active feedrate type:
Boundary conditions
• The programmed value of
FB=<value>
must be greater than zero.
• If no traversing motion is programmed in the block (e.g.: Computational block), the
FB
has no effect.
• If no explicit feed for chamfering/rounding is programmed, then the value of
FB
also applies for any contour
element chamfering/rounding in this block.
• The path speed profile programmed with
FLIN
or
FCUB
is not active together with revolutional feedrate for
G95
as well as with constant cutting speed for
G96
/
G961
and
G97
/
G971
.
• Feedrate interpolations
FLIN
,
FCUB
, .. are also possible without restriction.
• Simultaneous programming of
FB
and
FD
(handwheel travel with feed overlay) or
F
(modal path feedrate) is
not possible.
G94
,
G961
,
G971
:
Feedrate in mm/min or inches/min or
o
/min
G95
,
G96
,
G97
:
Revolutional feedrate in mm/rev or inch/rev
