HEIDENHAIN ND 720 v.3 - Manual (Page 38)

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Operating
Parameters
P40.1 to P40.3 Select type of axis error compensation
No axis error compensation
COMP. OFF
Linear error compensation active,
multipoint error comp. not active COMP. LIN
Multipoint error compensation active,
linear error compensation not active COMP. MULTI
P41.1 to P41.3 Linear axis error compensation
Input range (µm): -99999 to +99999
Factory default setting: 0
Example: Displayed length Ld = 620.000 mm
Actual length (as determined for example with
the VM 101 from HEIDENHAIN)
La = 619.876 mm
Difference DL = L
a
– L
d
= – 124 µm
Compensation factor k:
k = DL/Ld = – 124 µm/0.62 m = – 200 [µm/m]
P42.1 to P42.3 Backlash compensation
Input range (mm):
+9,999 to –9,999
Default setting: 0,000 = no backlash
compensation
A change in direction might cause a clearance between
rotary encoder and table. This is referred to as backlash.
Positive backlash: The rotary encoder is ahead of the table.
The distance traversed by the table is too short (entry of
positive value).
Negative backlash: The rotary encoder follows the table. The
distance traversed by the table is too large (entry of negative
value).
P43.1 to P43.3 Reference marks
One reference mark
SINGLE REF.M.
Distance-coded with 500 • SP 500 SP
Distance-coded with 1000 • SP 1000 SP
Distance-coded with 2000 • SP 2000 SP
Distance-coded with 5000 • SP
5000 SP
(SP: signal period)
P44.1 to P44.3 Reference mark evaluation
Evaluation
REF. X ON
No evaluation
REF. X OFF
P45.1 to P45.3 Encoder monitoring
Amplitude and frequency
monitoring ALARM ON
No monitoring
ALARM OFF
P48.1 to P48.3 Activate axis display
Axis display active
AXIS ON
Not active AXIS OFF
P49.1 to P49.3 Axis designation for measured value output
An axis designation for the measured value output can be set
through the number of the ASCII character. The axis
designation is output together with the measured value.
Input range:
0 to 127
Measured value output disabled 0
ASCII character from ASCII table 1 to 127
Default setting: P49.1 88
P49.2 89
P49.3 90
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