Detailed Description
2.4 Tool radius compensation 2D (TRC)
Basic logic functions: Tool Offset (W1)
88
Function Manual, 11/2006, 6FC5397-0BP10-2BA0
Special cases
•
If tool radius compensation is not active (
G40
),
CUTCONON
has no effect. No alarm is
produced. The G code remains active, however.
This is significant if tool radius compensation is to be activated in a later block with
G41
or
G42
.
•
It is permissible to change the G code in the 7th G-code group (tool radius compensation;
G40
/
G41
/
G42
) with
CUTCONON
active. A change to
G40
is active immediately.
The offset used for traversing the previous blocks is traveled.
•
If
CUTCONON
or
CUTCONOF
is programmed in a block without traversing in the active
compensation plane, activation is delayed until the next block that has such a traversing
motion.
•
If
CUTCONON
is programmed with active tool radius compensation and not canceled
before the end of the program, the traversing blocks are traversed with the last valid
compensation.
The same applies for reprogramming of
G41
or
G42
in the last traversing block of a
program.
•
If tool radius compensation is activated with
G41
or
G42
and
CUTCONON
is also already
active, activation of compensation is delayed until the next traversing block with
CUTCONOF
.
•
When reapproaching the contour with
CUTCONOF
, the 17th G-code group (approach and
retraction behavior with tool compensation;
NORM
/
KONT
is evaluated, i.e., a bypass circle
is inserted if necessary for
KONT
. A bypass circle is inserted under the same conditions
as for activation of tool radius compensation with
G41
or
G42
.
•
The number of blocks with suppressed tool radius compensation is restricted:
MD20252 $MC_CUTCOM_MAXNUM_SUPPR_BLOCKS (Maximum number of blocks
with compensation suppression).
If it is exceeded, machining is aborted and an error message issued.
The restriction is necessary because the internal block processing in the last block before
CUTCONON
must be resumed when repositioning.
•
The response after reprogramming
G41
or
G42
when tool radius compensation is already
active is similar to compensation suppression.
The following deviations apply:
–
Only linear blocks are permissible
–
A single traversing block that contains
G41
or
G42
is modified so that it ends at the
offset point of the start point in the following block. Thus it is not necessary to insert a
dummy block. The same applies to the last block in a sequence of traversing blocks
where each contains
G41
or
G42
.
–
The contour is always reapproached with
NORM
, independent of the G code of the 17th
group (approach and retraction behavior with tool compensation;
NORM
/
KONT
).
•
If
G41
/
G42
is programmed several times in consecutive traversing blocks, all blocks are
machined as for
CUTCONON
, except for the last one.
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 ...