Output Specification for
absolute encoders with SSI interface
Excitation voltage
10 … 30 V DC
Signal Conditioner
Excitation current
100 mA
HSSI
Interface
Standard SSI
Lines / drivers
Code
Clock and data / RS-422
Gray
Absolute Encoder
synchronous serial
Resolution multiturn
3 dB cutoff frequency
Control input
Alarm output
Status LED
12 + 12 bit
500 kHz
Direction
Alarm bit (SSI option), warning bit
Green = OK, red = alarm
Cable or male socket 12 pin
Connection
Resolution Clock
Data format
T1 T2 T3
…
…
T12 T13
M0 S11
…
T21 T22 T23 T24 T25 T26
S3 S2 S1 S0
Data bits
24 bit
M11 M10 M9
…
0
Mx = multiturn bits, Sx = single turn bits
Note:
Extension of the cable length will reduce the
maximum transmission rate.
The signals CLOCK/CLOCK and DATA/DATA
must be connected in a twisted pair cable,
shielded per pair and common.
Cable length
Baud rate
Transmission rate
< 50 m
< 400 kHz
< 300 kHz
< 200 kHz
< 100 kHz
< 100 m
< 200 m
< 400 m
Signal names
Color
Connector pin no.
Signal Wiring /
Connection
Excitation +
Excitation GND (0V)
CLOCK
white
brown
yellow
green
pink
8
1
3
CLOCK
11
2
DATA
DATA
grey
10
5
Direction *
0 V signal output
blue
black
12
* Excitation + = cw increasing code, 0 V = cw decreasing code
Connection
Mating Connector
CONN-CONIN-12F-G
ASM
CAT-WS-E-05
65
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ASM-SENSOR [ ASM GMBH ]
