Siemens SINUMERIK 840D sl Programming Manual page 748
Nc programming
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Also See for SINUMERIK 840D sl:
- Function manual (2184 pages) ,
- Commissioning manual (1102 pages) ,
- Diagnostic manual (1054 pages)
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Work preparation
3.13 Tool offsets
Syntax
TOWSTD
TOWMCS
TOWWCS
TOWBCS
TOWTCS
TOWKCS
Meaning
TOWSTD:
TOWMCS:
TOWWCS:
TOWBCS:
TOWTCS:
TOWKCS:
Further information
Distinguishing features
The most important distinguishing features are shown in the following table:
G command
TOWSTD
TOWMCS
TOWWCS
TOWBCS
TOWTCS
TOWWCS, TOWBCS, TOWTCS: The wear vector is added to the tool vector.
Linear transformation
The tool length can be defined meaningfully in the MCS only if the MCS is generated by linear
transformation from the BCS.
Non-linear transformation
For example, if with TRANSMIT a non-linear transformation is active, then when specifying the
MCS as requested coordinate system, BCS is automatically used.
748
Initial setting value for offsets in tool length wear value
Offsets in tool length in MCS
Offsets in tool length in WCS
Offsets in tool length in BCS
Offsets in tool length at tool carrier reference point (orientable tool carrier)
Compensations of tool length for tool head (kinematic transformation)
Wear value
Initial value, tool length
Wear value in MCS. TOWMCS is
identical to TOWSTD if a tool carrier
that can be orientated is not active.
The wear value is converted to the
MCS in the WCS.
The wear value is converted to the
MCS in the BCS.
The wear value is converted to the
MCS in the workpiece coordinate sys‐
tem.
Active orientable tool carrier
Wear values are subject to rotation.
It only rotates the vector of the resul‐
tant tool length without taking into
account the wear.
The tool vector is calculated as for
TOWMCS without taking into ac‐
count the wear.
The tool vector is calculated as for
TOWMCS without taking into ac‐
count the wear.
The tool vector is calculated as for
TOWMCS without taking into ac‐
count the wear.
Programming Manual, 12/2019, 6FC5398-2EP40-0BA0
NC programming
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