POSICHRON®
Output Specification SSI
Output
RS422
Synchronous serial
interface SSI
Excitation voltage
Excitation current
Clock frequency
Code
10 ... 36 V DC, residual ripple 10 mVSS
Typ. 80 mA, 150 mA max.
100 kHz ... 1 MHz
Gray code, dual code
≥ 5 µm
Resolution
Delay between pulse trains
Stability (temperature)
Operating temperature
EMC
>25 µs
±50 x 10-6 / °C f.s.
-40 ... +85 °C
EN 61326-1:2013
The data transmission takes place by means of the two signals CLOCK and DATA. The pro-
cessing unit (PLC, microcomputer) sends pulse sequences which clock the data transmissi-
on at the required transfer rate. With the first falling edge of the pulse sequence the position
of the sensor is recorded and stored. The following rising edges control the bit-by-bit transfer
of the data word. After a delay time the next new position information can be transwithted.
Description
Data format
(Train of 26 pulses)
Signal diagram
Sensor circuit
Subsequent circuit
DATA
DATA
CLOCK
CLOCK
Cable length
50 m
Baud rate
100-1000 kHz
100-300 kHz
Note:
Extension of the cable length will reduce the
maximum transmission rate.
100 m
The signals CLOCK/CLOCK and DATA/DATA
must be connected in a twisted pair cable,
common shielded.
Cable connection
View to sensor
Signal wiring
Signal
Plug connection
connector
Excitation +
Excitation GND
CLOCK
1
2
3
4
5
6
white
brown
green
yellow
grey
CLOCK
DATA
DATA
pink
Error indication see page 10.
11/14
DB-PCFP23-E-2013-11
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