Siemens SINUMERIK 840D sl Programming Manual page 196

Measuring variants
2.4 Measure tool (turning)
Measure drill - special applications
The tool probe has been calibrated with G18 active as is usual for turning tools.
Function
If drills are used on lathes with a length compensation as for milling machines (SD 42950:
$SC_TOOL_LENGTH_TYPE=0), then a drill can also be measured (gauged) in this
application.
Length L1 is always calculated in the 3rd axis (tool offset axis) of the actual plane G17 to
G19. This also characterizes the position of the tool.
G17: L1 in Z axis (corresponds to axial position)
G18: L1 in Y axis (no turning machine application)
G19: L1 in X axis (corresponds to radial position)
Conditions
Length L1 is determined if the following conditions are satisfied:
● the active tool is of type 2xy (drill)
● Channel-specific SD 42950: $SC_TOOL_LENGTH_TYPE=0
● G17 or G19 are active and
Measure drill length L1 for G17
Procedure
The part program or ShopTurn program to be processed has been created and you are in
the editor.
196
1. Press the "Meas. tool" softkey.
2. Press the "Drill" softkey.
The input window "Measure: drill" is opened.
Measure drill length L1 for G19
Programming Manual, 02/2011, 6FC5398-4BP40-0BA0
Measuring cycles