Siemens SINUMERIK 840D sl Programming Manual page 392

Tool offsets
9.3 Special handling of tool offsets
Setting data
Setting Data
SD42900 $SC_MIRROR_TOOL_LENGTH
SD42910 $SC_MIRROR_TOOL_WEAR
SD42920 $SC_WEAR_SIGN_CUTPOS
SD42930 $SC_WEAR_SIGN
SD42935 $SC_WEAR_TRANSFORM
SD42940 $SC_TOOL_LENGTH_CONST
SD42950 $SC_TOOL_LENGTH_TYPE
SD42960 $SC_TOOL_TEMP_COMP
References
Function Manual Basic Functions; Tool Offset (W1)
Further Information
Activation of modified setting data
When the setting data described above are modified, the tool components are not
reevaluated until the next time a tool edge is selected. If a tool is already active and the data
of this tool are to be reevaluated, the tool must be selected again.
The same applies in the event that the resulting tool length is modified due to a change in
the mirroring status of an axis. The tool must be selected again after the mirror command, in
order to activate the modified tool-length components.
Orientable toolholders and new setting data
Setting data SD42900 to SD42940 have no effect on the components of an active toolholder
with orientation capability. However, the calculation with an orientable toolholder always
allows for a tool with its total resulting length (tool length + wear + tool base dimension). All
modifications initiated by the setting data are included in the calculation of the resulting total
length; i.e., vectors of the orientable toolholder are independent of the machining plane.
392
Significance
Mirroring of tool-length components and
components of the tool base dimension.
Mirroring of wear values of the tool-length
components.
Evaluating the sign of the wear components as
a function of the tool nose position.
Inverts the sign of wear dimensions.
Transformation of wear values.
Assignment of tool length components to
geometry axes.
Assignment of the tool length components
independent of tool type.
Temperature compensation value in tool
direction. Also operative when tool orientation is
programmed.
Programming Manual, 03/2013, 6FC5398-2BP40-3BA1
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