Siemens SINUMERIK 840Di Function Manual page 1826

Detailed Description
2.10 Working with tool environments
_STAT
_T
Note
If _STAT is not specified, the current status is used as the tool environment. Since _T = 0
refers to the T number saved in the tool environment, the active tool is used in that
environment, i.e., parameters _T = 0 and _T = -1 have the same meaning in this special
case.
2-146
S: Sum offsets
T: Toolholder with orientation capability
W: Wear
If the first substring is empty (except for white spaces), the complete tool length is calculated
allowing for all components. This applies even if the _COMP parameter is not specified.
An optional programmable colon must be followed by a single character specifying the coordinate
system, in which the tool length components are to be evaluated. If no coordinate system is
specified, the evaluation is performed in the MCS (machine coordinate system). If any rotations
are to be taken into account, they are specified in the tool environment defined in _STAT.
The characters have the following meanings:
B: Basic coordinate system (BCS)
K: Tool coordinate system of kinematic transformation (KCS)
M: Machine coordinate system (MCS)
T: Tool coordinate system (TCS)
W: Workpiece coordinate system (WCS)
STRING
Name of the data set for describing a tool environment.
If the value of this parameter is the null string ("") or is not specified, the current status is used.
INT
Internal T number of tool
If this parameter is not specified, or if its value is 0, the tool stored in _STAT is used.
If the value of this parameter is -1, the T number of the active tool is used.
It is also possible to specify the number of the active tool explicitly.
Function Manual, 08/2005 Edition, 6FC5397-0BP10-0BA0
Tool Compensation (W1)