Siemens SINUMERIK 840D sl Function Manual page 1949

Programming
G-code group 56 can be used to define the following values:
Syntax
TOWSTD
TOWMCS
TOWWCS
TOWBCS
TOWTCS
TOWKCS
Coordinate systems for offsets in tool length
G codes TOWMCS, TOWWCS, TOWBCS, TOWTCS, and TOWKCS can be used, e.g., to measure
the wear tool length component in five different coordinate systems.
1. Machine coordinate system
1. Basic Coordinate System
1. Workpiece coordinate system
1. Tool coordinate system of kinematic transformation
1. Tool coordinate system
The calculated tool length or a tool length component can be represented and read out in
one of these coordinate systems using the GETTCOR function (predefined subprogram).
References:
/FB1/ Function Manual Basic Functions; Tool Offset (W1),
Section: Read tool lengths, tool length components
Basic logic functions: Tool Offset (W1)
Function Manual, 11/2006, 6FC5397-0BP10-2BA0
Corrections
Initial setting value for offsets in tool length
Wear data in the machine coordinate system (MCS)
Wear values in workpiece coordinate system (WCS)
Wear values in basic coordinate system (BCS)
Wear values in the TCS (Tool Coordinate System) at the toolholder (tool carrier
reference point T)
Wear values in tool coordinate system for kinematic transformation (KCS) of tool
head
Detailed Description
2.9 Sum offsets and setup offsets
MCS
BCS
WCS
KCS
TCS
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