Tool Lengths; Commissioning; General; Overview - Siemens SINUMERIK 840DE sl Function Manual

K12 transformation definitions with kinematic chains

4.2 Commissioning

4.1.14

Tool lengths

Tool lengths
If the portion of the kinematic chain that leads to the tool is part of the tool, then the tool
reference point and the tool reference position that was set via $NT_T_REF_ELEM are no
longer identical.
The following applies to the NC functions, GETTCORR, SETTCORR and LENTOAX, for which
the tool reference point is important:
The portion of the kinematic chain that lies between the tool reference position and the tool
reference point is handled like an orientable tool carrier, which has been defined via machine
data.
4.2 Commissioning
4.2.1

General

4.2.1.1

Overview

The startup of the function "Transformations via kinematic chains" is done by means of:
● Machine data
– Specification of the quantity structure
– Specification of the first element in the kinematic chain
● System variables
– Definition of the transformation type
– Specification of the kinematic properties of an element
– Connection of the element to the kinematic chain
4.2.1.2

Structure of the system variables

The system variables are structured according to the following scheme:
● $NT_<Name>[<Index_1>]
● $NT_<Name>[<Index_1>, <Index_2>]
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Function Manual, 06/2019, A5E47435470B AA
Transformations