Siemens SINUMERIK 840Di sl - 8.4.3 Service SI (Safety Integrated)

Tool offsets
8.17 Special handling of tool offsets
Fundamentals
400 Programming Manual, 11/2006, 6FC5398-1BP10-2BA0
8.17.1 Mirroring of tool lengths
Function
Set setting data SD 42900 MIRROR_TOOL_LENGTH and SD 42910
MIRROR_TOOL_WEAR not equal to zero can be used to mirror tool length components and
components of the tool base dimensions with wear values of the corresponding axes.
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Parameters
SD 42900 MIRROR_TOOL_LENGTH
Setting data not equal to zero:
The tool length components ($TC_DP3, $TC_DP4 and $TC_DP5) and the components of
the tool base dimensions ($TC_DP21, $TC_DP22 and $TC_DP23), whose associated axes
are mirrored, are also mirrored – through sign inversion.
The wear values are not mirrored. If these are also to be mirrored, setting data
$SC_MIRROR_TOOL_WEAR must be enabled.
SD 42910 MIRROR_TOOL_WEAR
Setting data not equal to zero:
The wear values of the tool length components, whose associated axes are mirrored, are
also mirrored - by sign inversion.