Datalogic DX8200A Manual de instalación descargar pdf (Pagina 29)

INSTALLATION

Inputs

The inputs of the reader are on the 26-pin connector of the DX8200A.

These inputs are called EXT_TRIG/PS, IN2/ENC, IN3 and IN4.

Pin Name Function

18 EXT_TRIG/PS A External trigger (polarity insensitive) for PS

19 EXT_TRIG/PS B External trigger (polarity insensitive) for PS

6 IN2/ENC A Input signal 2 (polarity insensitive) for Encoder

10 IN2/ENC B Input signal 2 (polarity insensitive) for Encoder

14 IN3A Input signal 3 (polarity insensitive)

15 IN4A Input signal 4 (polarity insensitive)

24 IN_REF Common reference of IN3 and IN4 (polarity insensitive)

IN2/ENC is normally used for the Encoder input. In PackTrack™ mode, it detects the

conveyor speed. The maximum Encoder frequency is 2 KHz.

EXT_TRIG/PS is the main presence sensor. When active, this input tells the scanner to scan

for a code and that decoding can take place. The yellow LED (Figure C, 3) indicates the

EXT_TRIG/PS is active.

IN3 and IN4 can be used as the stop signal for the reading phase.

All inputs are optocoupled, polarity insensitive, and driven by a constant current generator;

the command signal is filtered through an anti-disturbance circuit which generates a delay

which can be set to 5 ms or 500

µs. In particular, EXT_TRIG/PS, IN3 and IN4 share the

same value which usually corresponds to 5 ms when using a photoelectric sensor, while IN2

has a different value which is set to 500

µs when this input is used for the Encoder.

EXTERNAL TRIGGER/ENCODER

DX8200A

+ 5V

A/B

Vext

B/A

Ground

Figure 8 – PNP Command Input Connection using External Power

EXTERNAL TRIGGER/ENCODER

DX8200A

+ 5V

A/B

B/A

GND

Ground

Figure 9 - PNP Command Input Connection using Scanner Power

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Datalogic DX8200A Manual de instalación Pagina 29