Siemens Sinumerik 840D sl Programming Manual page 414

Tool offsets
7.3 Special handling of tool offsets
Inclusion of wear values in calculation
The setting data SD42935 $SC_WEAR_TRANSFORM defines which of the three wear
components:
• Wear
• Total offsets fine
• Total offsets coarse
should be subject to a rotation using adapter transformation or a tool holder that can be
orientated if one of the following G codes is active:
• TOWSTD Default setting
For offsets in the tool length
• TOWMCS wear values
In the machine coordinate system (MCS)
• TOWWCS wear values
In the workpiece coordinate system (WCS)
• TOWBCS wear values (BCS)
In the basic coordinate system
• TOWTCS wear values in the tool coordinate system at the tool holder reference (T tool
holder reference)
• TOWKCS Wear values in the coordinate system of the tool head for kinematic
transformation
Note
Evaluation of individual wear components (assignment to geometry axes, sign evaluation)
is influenced by:
•
•
•
414
The active plane
The adapter transformation
Following setting data:
– SD42910 $SC_MIRROW_TOOL_WEAR
– SD42920 $SC_WEAR_SIGN_CUTPOS
– SD42930 $SC_WEAR_SIGN
– SD42940 $SC_TOOL_LENGTH_CONST
– SD42950 $SC_TOOL_LENGTH_TYPE
Programming Manual, 02/2011, 6FC5398-2BP40-1BA0
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