num parameter manual - Documentation CN

P10 P11 P12 P13 P25 P26 P34 P36
Yielding
Multi/Divi = Movement (Internal measurement unit)/Encoder measurement
Measurement
The internal measurement is expressed in mm/100, μm, μm/10 or μm/100 for linear axes (see 4.8) and thousandths
of a degree for rotary axes.
! CAUTION
For optimum accuracy, ratio MULTI/DIVI must be < 1
(e.g. An internal unit of 1 μm with MULTI/DIVI = 10 is equivalent to a measurement to
0.01 mm).
The MULTI and DIVI coefficients must be < 32768.
UNI-TE request (see UNI-TE Protocol User’s Manual)
The axis measurement conversion coefficients can be modified by a UNI-TE request. A reset (CNC reset) resets the
CNC to the state specified by P11.
Examples
Case of a rotary encoder
Evaluate the movement and encoder measurement for one encoder revolution.
Encoder Encoder measurement = Number of lines x 4 x interpolation of the consecutive electronics.
Encoder ROD456 (2500 lines) and consecutive electronics EXE610B (interpolation by 10) with an internal unit of
0.1 μm, movement 5 mm, i.e. the 50,000 internal units.
Encoder measurement = 2500 x 4 x 10 = 100,000
MULTI/DIVI = 50,000/100,000 = 1/2
MULTI/DIVI = 50000/100000 = 1/2 (MULTI = 1 and DIVI = 2 after simplifying the fraction).
Case of a linear encoder
The movement and encoder measurement are given for a rule division period.
Encoder Encoder measurement = 1 x 4 x interpolation of the consecutive electronics.
Rule LS107 (period 20 μm) and consecutive electronics EXE630 (interpolation by 5) with an internal unit of 1 μm.
Measurement = 1 x 4 x 5 = 20
MULTI/DIVI = Period/Measurement = 20/20 = 1/1.
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