64

CAT-WS-E-05

ASM

www.asm-sensor.com

Output Specification

ADSI16 for WS position sensors

The sensing device of the ADSI is a precision potentiometer. The position information is

given by an analog/digital converter output serialized as a data word. Data transmission

takes place by means of the signals CLOCK and DATA. The processing unit (PLC, Micro-

computer) sends pulse sequences which clock the data transmission with the required

transfer rate. With the first falling edge of a pulse sequence the position of the sensor is

recorded and stored. The following rising edges control the bit-by-bit A/D conversion,

encoding and output of the data word. After a delay time the next new position information

will be transmitted.

Signal Conditioner

ADSI

A/D converted

synchronous serial

Output

EIA RS-422, RS-485, short-circuit proof

Excitation voltage

11 ... 27 VDC

Excitation current

200 mA max.

Clock frequency

70 ... 500 kHz

Code

Gray code, continuous progression

Delay between pulse trains

T=30 µs min.

Resolution

16 bit (65536 counts) full scale; optional 12 bit

or 14 bit

Stability (temperature)

±50 x 10

Operation temperature

-20 ... +85 °C

EMC

According to EN 61326:2004

Recommended

Processing

Input Circuit

GND (0V)

Sensor circuit

Cable

Subsequent circuit

Data Format

(Train of 26 Pulses)

Mating connector: view to solder terminals

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.

Description

· Resolution 16 bit, data transmission synchronous serial/SSI

· Optional available with 12 bit (ADSI) or 14 bit (ADSI14) resolution

· No loss of data at power-down

· Easy to connect to PLC’s with SSI input circuit

Signal Wiring

Signal names

Connector pin no.

Excitation +

1

Excitation GND (0V)

2

CLOCK

3

CLOCK

4

DATA

5

DATA

6

Screen

not connected

CONN-M12-8F-G

CONN-DIN-8F-W

Transmission rate

Cable length

Baud rate

< 50 m

< 300 kHz

< 100 m

< 100 kHz