Siemens SINUMERIK 840D sl Function Manual page 191

Parameters for geometry and wear
Tool geometry compensations are assigned to system variables $TC_DP3 to $TC_DP11.
System variables $TC_DP12 to $TC_DP20 allow you to name a wear for each of these
parameters:
Geometry
Length compensations
$TC_DP3
$TC_DP4
$TC_DP5
Radius compensation
$TC_DP6
$TC_DP7
Other compensations
$TC_DP8
$TC_DP9
$TC_DP10
$TC_DP11
Tool base dimension or adapter dimension
$TC_DP21
$TC_DP22
$TC_DP23
Technology
System variable
$TC_DP24
$TC_DP25
Parameters of the sum and setup offsets ($TC_SCPxy, $TC_ECPxy)
The numbering of the parameters is oriented to the numbering of system variables $TC_DP3
to $TC_DP11.
Tools
Function Manual, 06/2019, A5E47435126B AA
Wear Compensations
$TC_DP12 Length 1
$TC_DP13 Length 2
$TC_DP14 Length 3
$TC_DP15 Radius 1
$TC_DP16 Radius 2
$TC_DP17 Length 4
$TC_DP18 Length 5
$TC_DP19 Angle 1
$TC_DP20 Angle 2
Adapter length 1
Adapter length 2
Adapter length 3
Clearance angle
The clearance angle is stored here for ManualTurn; tool type 5xx. Same
significance as in standard cycles for turning tools.
The tip angle of the drill is stored here for ShopMill; tool type 2xx.
Used in standard cycles for turning tools; tool type 5xx. This is the angle at
the secondary cutting edge for these tools.
The value for the cutting rate is stored here for ManualTurn.
A bit-coded value for various states of tool types 1xx and 2xx is stored here
for ShopMill.
W1: Tool offset
2.15 Sum and setup offsets
191