Detailed Description 
  2.10 Working  with tool environments 
Basic logic functions: Tool Offset (W1) 
Function Manual, 11/2006, 6FC5397-0BP10-2BA0 
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_LEN[11] 
REAL 
  Result vector 
The vector components are arranged in the following order: 
  Tool type  (LEN[0]) 
  Length of cutting 
edge 
(LEN[1]) 
  Abscissa  (LEN[2]) 
  Ordinate   (LEN[3]) 
  Applicate  (LEN[4]) 
  Tool radius  (LEN[5]) 
  The coordinate system defined in _COMP and _STAT is used as the reference 
coordinate system for the length components. If no coordinate system is defined in 
_COMP, the tool lengths are represented in the machine coordinate system. 
The assignment of the abscissa, ordinate and applicate to the geometry axes depends 
on the active plane in the tool environment, i.e., with G17, the abscissa is parallel to X, 
with G18 it is parallel to Z, etc. 
Components LEN[6] to LEN[10] contain the additional parameters, which can be used 
to specify the geometry description of a tool (e.g., $TC_DP7 to $TC_DP11 for the 
geometry and the corresponding components for wear or sum and setup offsets). 
These 5 additional elements and the tool radius are only defined for components E, G, 
S, and W. Their evaluation does not depend on _STAT. The corresponding values in 
LEN[5] to LEN[10] can thus only be not equal to zero if at least one of the four specified 
components is involved in the tool length calculation. The remaining components do not 
influence the result. The dimensions refer to the control's basic system (inch or metric).