Siemens SINUMERIK 840D sl Programming Manual page 300

Measuring variants
3.6 Measure tool (milling)
Further, the following setting data must be set:
● SD 42950 $SC_TOOL_LENGTH_TYPE = 3
● SD 42940 $SC_TOOL_LENGTH_CONST = 17
● SD 42942 $SC_TOOL_LENGTH_CONST_T = 19
Additional settings/notes relating to milling/turning technology should be taken from IM9,
Chapter "Turning on milling machines".
Function
Using measuring cycles, the probe can be calibrated on milling/turning machines and milling,
drilling and turning tools can be measured.
● A probe is calibrated using the CYCLE971 cycle
● Cycle CYCLE971 is used to measure milling and drilling tools
● Cycle CYCLE982 is used to measure turning tools
The descriptions for the appropriate cycles in this manual should be used to parameterize the
individual measuring versions.
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Programming Manual, 12/2017, 6FC5398-4BP40-6BA1
Measuring cycles