PROGRAMMING
B–63664EN/02
12. COMPENSATION FUNCTION
187
Cutter compensation C is not performed for commands input from the
MDI.
However, when automatic operation using the absolute commands is
temporarily stopped by the single block function, MDI operation is
performed, then automatic operation starts again, the beam path is as
follows :
In this case, the vectors at the start position of the next block are translated
and the other vectors are produced by the next two blocks. Therefore,
from next block but one, cutter compensation C is accurately performed.
V
B2
V
B1
V
C1
’
V
C1
V
C2
V
B1
’
V
B2
’
P
B
P
A
P
B
’
P
C
P
D
Command
for MDI
When position P
A
, P
B
, and P
C
are programmed in an absolute command,
beam is stopped by the single block function after executing the block
from P
A
to P
B
and the beam is moved by MDI operation. Vectors V
B1
and
V
B2
are translated to V
B1
’ and V
B2
’ and offset vectors are recalculated for
the vectors V
C1
and V
C2
between block P
B
–P
C
and P
C
–P
D
.
However, since vector V
B2
is not calculated again, compensation is
accurately performed from position P
C
.
12.3.7
Input Command from
MDI