num parameter manual - Documentation CN

7.4 Datum Switch Position in Machine Dimensions P16
Description
7 - 10 en-938818/7
Category Travels on axes
Type 2 Signed decimal
No. of words 32
Used to set the measurement origin (ORPOM) of an axis within or outside the travel limits.
Principle
The word number gives the physical address of the axis.
Physical List
axis @ of words
@0 Word N0
@1 Word N1
' '
' '
' '
@31 Word N31
The values are expressed in the internal measurement unit: mm/10, mm/100, μm, μm/10 or μm/100 for linear axes
(see 4.8) and deg/10000 for rotary axes.
To determine the sign of ORPOM, it is necessary to go to the desired measurement origin OM and set the initialisation
point.
Each word contains the position of the datum switch on the corresponding axis in machine dimensions. The sign is
determined by the direction from the measurement origin OM to the datum switch, taking into account the normalised
axis direction.
UNI-TE request (see UNI-TE Protocol User’s Manual)
The measurement origin on an axis can be modified by a UNI-TE request. A reset (CNC reset) resets the CNC to the
state specified by P16.