Siemens SINUMERIK 840DE Programming Manual page 373

No kinematic transformation and no orientable toolholder
If neither a kinematic transformation nor an orientable toolholder is active, then all the other
four coordinate systems (except for the WCS) are combined. It is then only the WCS, which
is different to the other systems. Since only tool lengths need to be evaluated, translations
between the coordinate systems are irrelevant.
References
For further information about tool offsets, please see:
/FB1/, Description of Functions, Basic Machine (Part 1), Tool Compensation (W1)
Inclusion of wear values in calculation
The setting data SD 42935 WEAR_TRANSFORM defines, which of the following three wear
components
1. Wear
2. Total offsets fine
3. Total offsets coarse
are to be made subject to a rotation by way of an adapter transformation or orientable
toolholder if one of the following G codes is active.
• TOWSTD Initial setting
• TOWMCS Wear values
• TOWWCS Wear values
• TOWBCS Wear values (BCS)
• TOWTCS Wear values in tool coordinate system at the toolholder (T toolholder reference)
• TOWKCS Wear values in coordinate system of tool head with kinematic transformation
Fundamentals
Programming Manual, 10.2004 Edition, 6FC5 298-7AB00-0BP1
for offsets in tool length
in the machine coordinate system (MCS)
in workpiece coordinate system (WCS)
in basic coordinate system
Note
Evaluation of individual wear components (assignment to geometry axes, sign
evaluation) is influenced by the
Active plane
•
Adapter transformation and
•
The following setting data:
•
SD 42910: MIRROW_TOOL_WEAR
SD 42920: WEAR_SIGN_CUTPOS
SD 42930: WEAR_SIGN
SD 42940: TOOL_LENGTH_CONST
SD 42950: TOOL_LENGTH_TYPE
8.17 Special handling of tool offsets
Tool offsets
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