Brief Description
Basic logic functions: Feeds (V1)
Function Manual, 11/2006, 6FC5397-0BP10-2BA0
7
Feedrate interpolation
To permit flexible definition of the feedrate characteristic, the feedrate programming
according to DIN 66205 has been extended by linear and cubic characteristics.
The cubic profiles can be programmed directly or as interpolating spline.
You can program the following feedrate profiles:
•
FNORM
Behavior as per DIN 66025 (default setting).
An
F
value programmed in the block is applied over the entire path of the block, and is
subsequently regarded as a fixed modal value.
•
FLIN
An
F
value programmed in the block is positioned from the current value at the start of the
block to the end of the block linearly across the path distance and applies as a modal
value thereafter.
•
FCUB
The
F
values programmed non-modally (relative to the end of the block) are connected by
a spline. The spline starts and ends at a tangent to the previous or subsequent define
feedrate. If the
F
address is missing in a block, the last
F
value programmed is used
instead.
•
FPO
The
F
address [syntax:
F=FPO (
...,...,...
)
] designates the feedrate response over a
polynomial from the current value to the end of the block in which it has been
programmed. The end value then applies as a modal value.
Machine data:
MD20172 $MC_COMPRESS_VELO_TOL
supports the definition of a tolerance for the path feedrate, if
FLIN
and
FCUB
are used in
conjunction with compression
COMPON
.
For more information about programmable feedrate paths, please see
References:
/PGA/ Programming Guide, Advanced.
Feedrate for chamfer/rounding FRC, FRCM
The machining conditions can change significantly during surface transitions to
chamfer/rounding. The chamfer/rounding contour elements therefore need their own
optimized feedrate values in order to achieve the required surface finish.
You can program the feedrate for the chamfer/rounding with
FRC
(non-modal) or
FRCM
(modal).
Non-modal feedrate FB
A separate feedrate can be specified for a single block with the
FB
command. During this
block the previously active path feedrate is overwritten, after the block the previously active
modal path feedrate becomes active once more.
Summary of Contents for SINUMERIK 840D sl
Page 282: ...Index Basic logic functions Acceleration B2 64 Function Manual 11 2006 6FC5397 0BP10 2BA0 ...
Page 388: ...Basic logic functions Travel to fixed stop F1 Function Manual 11 2006 6FC5397 0BP10 2BA0 52 ...
Page 962: ...Index Basic logic functions Emergency Stop N2 20 Function Manual 11 2006 6FC5397 0BP10 2BA0 ...
Page 1704: ...Constraints Basic logic functions Spindles S1 94 Function Manual 11 2006 6FC5397 0BP10 2BA0 ...
Page 1716: ...Index Basic logic functions Spindles S1 106 Function Manual 11 2006 6FC5397 0BP10 2BA0 ...
Page 1996: ...Index Basic logic functions Tool Offset W1 208 Function Manual 11 2006 6FC5397 0BP10 2BA0 ...
Page 2150: ...Table of contents Basic logic functions Appendix 4 Function Manual 11 2006 6FC5397 0BP10 2BA0 ...
Page 2184: ...Glossary Basic logic functions Appendix 38 Function Manual 11 2006 6FC5397 0BP10 2BA0 ...