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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.
EnDat/SSI
1
+5 V (U
2
0 V (U
N
3
A+
4
A-
5
+ Data
6
B+
7
B-
8
- Data
9
+5 V
(sensor line)
10
Do not assign
11
0 V
(sensor line)
12
Do not assign
13
Internal shield
14
+ Clock
15
- Clock
Housing
External shield
Assignment
1 V
PP
)
+5 V (U
P
P
)
0 V (U
)
N
A+
A-
Do not assign
B+
B-
Do not assign
+5 V
R+
0 V
R-
0 V
Do not assign
Do not assign
External shield
Hardware
11 µA
PP
)
+5 V
0 V
I
+
1
I
-
1
Do not assign
I
+
2
I
-
2
Do not assign
+5 V
I
+
0
0 V
I
-
0
Internal shield
Do not assign
Do not assign
External shield
75
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