HEIDENHAIN ND 281 B v.1 - Manual (Page 33)

33
Recommended parameter settings for HEIDENHAIN angle encoders with 11 µA
PP
/ 1 V
PP
signals
Cou
n
t
mo
de
De
cim
a
l
plac
es
Model
S
ign
al p
e
ri
od
s
per revol
u
ti
on
P36
Reference
marks
P43
Display
step
P37 P38
ROD 450 /
ROD 456 / ROD 486
/ ROD 1080
3600 One Single 0.01°
0.005°
0.001°
1
5
1
3
3
ROD 250 C / ROD 280 C
RON 255 C / RON 285 C 9000 Dist.-
coded 500 0.005°
0.001° 5
1 3
3
ROD 250 C / ROD 280 C
ROD 255 C / RON 285 C
ROD 700 C / ROD 780 C
RON 705 C / RON 785 C
RON 706 C / RON 786 C 18 000 Dist.-
coded 1000 0.001°
0.0005°
0.0001°
1
5
1 3
4
4
RON 905 / 36 000 One Single 0.0001° 1 4
ROD 800 C / ROD 880 C
ROD 806 C / ROD 886 C 36 000 Dist.-
coded 1000 0.0001° 1 4
Example:
Set parameters for any encoder
Angle encoder, e.g. with line count
s = 18 000 (P36)
Desired display step, e.g. a = 0.001°
Counting mode P37 = 1 (display counts 1, 2, 3, ...)
Decimal places of
a: P38 = 3
Convert decimal degrees into degrees, minutes, seconds
1 degree (1°) = 60 minutes (60'); 1 minute (1') = 60 seconds (60")
1 second (1")
≈
0.000278°
Angle Encoders