Datalogic Scanning DS2200 Manuale Utente Scaricare il pdf (Pagina 22)

DS2200

SGND

TXD

RXAUX

RXD

TXAUX

USER INTERFACE

DS2200

Figure 7 - RS232 auxiliary interface connections

2.3.4 Inputs

The inputs available on the connector supplied with the scanner are indicated below:

Pin Name Function

19 EXT TRIG- external trigger (input -)

22 I/O REF I/O reference

The EXT TRIG input is used to connect the external trigger which tells the scanner to

scan for a code. The active state of this input is selected in software. Refer to the

WinHost Help On Line.

The yellow LED (Figure A, 5) is on when EXT TRIG- is shorted to I/O REF.

This input was designed to be driven by an NPN type command. The connections

are indicated in the following diagram:

Signal

EXT TRIG-

VS = 5 Vdc

9/13

I/O REF

Ground

EXTERNAL TRIGGE

DS2200

+ 5V

47K

Figure 8 - External Trigger Input command

This input can be driven by an independently powered source, but the signal on

EXT TRIG- must not exceed 9 Vdc.

An anti-disturbance hardware filter is implemented on the External Trigger input (< 5

milliseconds delay).

An additional 15 ms (typical) delay can be implemented through a dedicated software

parameter (refer to WinHost Help On Line).

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Datalogic Scanning DS2200 Manuale Utente Pagina 22