HEIDENHAIN ND 281B User Manual page 26

Measured value displays
Table of Contents

Advertisement

Parameter
Settings / Function
Linear error compensation
P41 L.COMP.
99 999.9 < P41 < + 99 999.9 [µm/m]
Default setting: 0
Example: Find input value for P41
Displayed measuring length ............. L
Actual length (measured, e.g.
with the VM 101 comparator
system from HEIDENHAIN) .............. L
Length difference .............................
Compensation factor k (= P41):
D
k =
L / L
= – 123 µm / 0.62 m ....... k = – 198.4 [µm/m]
d
P42 BACKLASH Backlash compensation
Input range (mm):
Default setting:
= no backlash compensation
During a change in direction, the mechanical
play between the encoder and table, the so-
called backlash, can cause error.
Positive backlash: The rotary encoder moves
before the table, therefore the display value
is too high (positive value input).
Negative backlash: The rotary encoder
moves after the table, therefore the display
value is too low (negative value input).
26
1)
Only in linear measurement mode.
1)
= 620.000 mm
d
= 619.877 mm
a
D
L = L
– L
= – 123 µm
a
d
1)
+9.999 to -9.999
0.000
Parameter
Settings / Function
Reference marks
P43 REF
One reference mark
Distance-coded with 500 • SP
(SP: signal period)
Distance-coded with 1000 • SP
(e.g. for HEIDENHAIN LS ...C)
Distance-coded with 2000 • SP
Distance-coded with 5000 • SP
Reference mark evaluation
P44 REF
Evaluate the reference mark
Do not evaluate the reference
mark
Encoder monitoring
P45 ALARM
No monitoring
Monitor the frequency
Monitor contamination
Contamination + frequency FRQ. + CONT.
Baud rate
P50 RS232
110 / 150 / 300 / 600 / 1200 /
2400 / 4800 / 9600 / 19 200 /
38 400 baud
SINGLE REF.
500 SP
1000 SP
2000 SP
5000 SP
REF. ON
REF. OFF
ALARM OFF
FREQUENCY
CONTAMINAT.

Advertisement

Table of Contents
loading

Table of Contents