HEIDENHAIN IK 220 Benutzerhandbuch
Seite 75
Hardware
75
Specification of the SSI interface
The SSI interface of the absolute encoders is bidirectional. It
supplies the absolute position values in synchrony with a clock
pulse from the subsequent electronics. Sinusoidal voltage
signals (1 Vpp) are available as a complement.
Cable length: max. 10 m
Connection X1, X2 for encoders
D-sub connection with male contacts (15-pin)
Pin
No.
Assignment
EnDat/SSI 1 V
PP
11 µA
PP
1
+5 V (U
P
)
+5 V (U
P
) +5
V
2
0 V (U
N
)
0 V (U
N
) 0
V
3
A+
A+
I
1
+
4
A-
A-
I
1
-
5
+ Data
Do not assign
Do not assign
6
B+
B+
I
2
+
7
B-
B-
I
2
-
8
- Data
Do not assign
Do not assign
9
+5
V
(sensor line)
+5 V
+5 V
10
Do not assign
R+
I
0
+
11
0
V
(sensor line)
0 V
0 V
12
Do not assign
R-
I
0
-
13
Internal
shield
0 V
Internal shield
14
+ Clock
Do not assign
Do not assign
15
- Clock
Do not assign
Do not assign
Housing External shield
External shield External shield