Siemens SINUMERIK 840D sl Function Manual page 194

W1: Tool offset
2.15 Sum and setup offsets
DL = 0
Note
DL0 is not permitted. If compensation is deselected (D0 and T0), the sum offset also becomes
ineffective.
Programming a sum offset that does not exist triggers an alarm, similar to programming a D
compensation that does not exist.
Thus, only the defined wear remains part of the compensation (defined in system variables
$TC_DP12 to $TC_DP20).
Programming a sum offset when a D compensation is active (also applies to deselection) has
the same effect on the path as programming a D command. An active radius compensation will,
therefore, lose its reference to adjacent blocks.
Configuration
MD18112 $MN_MM_KIND_OF_SUMCORR, bit 4=0: (Properties of sum offset in the TO area)
default setting:
Only one set of sum offsets exists per DL number.
We refer in general to the sum offset.
This describes the data represented by $TC_SCPx.
Figure 2-47
The tool with T = t is active. With the data in the figure, the following is programmed:
D2
...
DL=1
194
MD18112 $MN_MM_KIND_OF_SUMCORR, bit 4 = 0
; 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_SCP13 to
$TC_SCP21.
Function Manual, 06/2019, A5E47435126B AA
Tools