num parameter manual - Documentation CN

5.9 Measurement Sensor Graduation and Number P36
of Graduations
Description
5 - 22 en-938818/6
Category Measurements
Type 5 Unsigned decimal
No. of words 64
Used to adapt the measurement sensor to the CNC axis cards.
Principle
Two words are assigned to each axis: N0 and N32 to axis 0; and N1 and N33 to axis 1; N2 and N34 to axis 2, etc.
The meaning of words 00-31 and 32-63 depends on the sensor type.
Default values initialised:
N00-N31: 1
N32-N63: 1
5.9.1 Incremental Rules with Encoded Reference Marks
Words 00-31: graduation in measurement increments p taking multi/divi into account.
Words 32-63: Number of graduations N between two marks (manufacturer data).
Calculation of a Word 0 to 31
Let:
- P be the manufacturer’s graduation
- Exe be the EXE multiplier
- N be the number of graduations between two marks
- P11 be the MULTI/DIVI coefficient applied to the axis considering a multiplier k depending on the machine
kinematics and the internal resolution used.
We have:
- P11 = k ⋅ P
4 ⋅Exe
We calculate the graduation p in measurement increments as follows:
4 ⋅Exe
P36, word 0 - 31 : (p) =
k
= P
P11