OutputSpecificationSSI

Description

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.

Dataformat

(Train of 26 pulses)

Synchronousserial

interfaceSSI

Output

RS422

Excitation voltage

10 ... 36 V DC, residual ripple 10 mV

SS

Excitation current

Typ. 80 mA, 150 mA max.

Clock frequency

100 kHz ... 1 MHz

Code

Gray code, dual code

Resolution

≥ 5 µm

Delay between pulse trains

>25 µs

Stability (temperature)

Operating temperature

-40 ... +85 °C

EMC

EN 61326-1:2013

Sensorcircuit

Subsequentcircuit

Cablelength

Baudrate

50 m

100-1000 kHz

100 m

100-300 kHz

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,

common shielded.

CLOCK

CLOCK

DATA

DATA

Signaldiagram

Error indication see page 9.

Signalwiring

Signal

Plugconnection

Cableconnection

Viewtosensor

connector

Excitation +

1

white

Excitation GND

2

brown

CLOCK

3

green

CLOCK

4

yellow

DATA

5

grey

DATA

6

pink

DB-PCFP25-E-2013-11

www.asm-sensor.com

10/13

© ASM GmbH

info@asm-sensor.com