Siemens SINUMERIK 840D sl Function Manual page 1504

W1: Tool offset
18.11 Sum offsets and setup offsets
Figure 18-51 MD18112 $MN_MM_KIND_OF_SUMCORR, bit 4 = 1 "setup offsets" + "sum offsets fine"
Tool T = t is active. With the data in the figure, the following is programmed:
D2
...
DL=1
...
DL=2
...
DL=0
Reading/writing in the part program
The individual sets of sum offset parameters are differentiated according to the number ranges
of system variable $TC_SCP.
The significance of the individual variables is similar to geometry variables $TC_DP3 to
$TC_DP11. Only length 1, length 2 and length 3 are enabled for the basic functionality
(variables $TC_SCP13 to $TC_SCP15 for the first sum offset of the cutting edge).
R5 = $TC_SCP13[ t, d ]
R6 = $TC_SCP21[ t, d ]
R50 = $TC_SCP23[ t, d ]
1504
; Cutting edge compensations, i.e., $TC_DP3 to $TC_DP11 + wear
($TC_DP12 to $TC_DP20) + adapter dimension
; Sum offset 1 is added to the previous D2 compensations, i.e.,
$TC_ECP13 + $TC_SCP13 to $TC_ECP21 + $TC_SCP21.
; Sum offset 2 is added to the D2 compensation instead of sum
offset 1; i.e., $TC_ECP23 + $TC_SCP23,...$TC_ECP31 + $TC_SCP31
; Deselection of sum offset. Only the data of D2 remain active.
; Sets the value of the R parameter to the value
of the first component of sum offset 1 for cut-
ting edge (d)
on tool (t).
; Sets the value of the R parameter to the value
of the last component of sum offset 1 for cutting
edge (d) on tool (t).
; Sets the value of the R parameter to the value
of the first component of sum offset 2 for cut-
ting edge (d) on tool (t).
Function Manual, 01/2015, 6FC5397-0BP40-5BA2
Basic Functions