Nt_Corr_Elem_P - Siemens SINUMERIK 840DE sl Function Manual

<CORR_TElementName>:
Example
Defines an correction element in the tool chain that is used to include offset values.
Program code
$NT_CORR_ELEM_T(1,2) = Corr_1;
4.2.5.10

$NT_CORR_ELEM_P

Function
This system data is used to reference a maximum of 4 constant chain elements ($NK_NAME)
in the part chain, which are provided for accepting offset values (linear offsets), as they are
determined in measurement cycles, for example. The offset values are calculated by the
function CORRTRAFO (Page 318). This is only important for orientation transformations.
There must always be an orientation axis in the kinematic chain between two of these elements.
This means that all 4 chain elements can only be occupied for 6-axis transformations in which
all 3 orientation axes are defined in the tool chain; whereas, for 5-axis transformations, for
example, this system data can only contain a maximum of three entries.
The entire kinematic chain, from the machine zero point (reference point of the kinematic chain)
to the workpiece center point (part), is divided into a maximum of 4 sections by the orientation
axes. There can be a maximum of one correction element in each of these sections. The
correction element with the index n must be located in the nth section (example:
$NT_CORR_ELEM_T[k, 1] must refer to a chain element between the first and second
orientation axis of the part chain).
Syntax
$NT_CORR_ELEM_P[<n>,<m>,<k>] = "<CORR_PElementName>"
Meaning
$NT_CORR_ELEM_P:
<n>:
Transformations
Function Manual, 06/2019, A5E47435470B AA
K12 transformation definitions with kinematic chains
Name of an element of the kinematic chain that is currently in effect,
which accepts an offset value (linear offset).
Data type: STRING
Comment
Refers to a correction element in the tool
chain of transformation "1" and position "2".
Names of the elements of the kinematic chain currently in effect.
Data type: STRING
Default value: ""
Value range: Element names of the currently active kinematic chain
System variable or transformation index
Data type: INT
Value range: 1, 2, ... (MD18866 $MN_MM_NUM_KIN_TRAFOS - 1)
4.2 Commissioning
313