Datalogic DS1100 SH2347 Manual de instalación descargar pdf (Pagina 19)

DATALOGIC DS1100

Installation - 2.5

2.3.2 Main Serial Interface - RS485 Half-Duplex

The RS485 half-duplex interface (3 wires + shield) is used for polled

communication protocols.

It can be used for Multidrop connections in a master/slave layout or with a

Datalogic Multiplexer, (see par. 2.5.2 and 2.5.3) exploiting a proprietary

protocol based on polled mode called MUX32 protocol, where a master

device polls slave devices to collect data.

The connector pinout follows:

Pin Name Function

5 RTX485+ RS485 + transmitted/received data

4 RTX485 - RS485 - transmitted/received data

7 SGND Signal Ground

RS485 Ref

USER INTERFACE

DS1100

RS485 -

RS485 +

SGND

RTX485 -

RTX485 +

Figure 2.6 - RS485 half-duplex connections

For this interface type, the Multidrop Address must also be set via serial

channel by the WinHost utility or by ESC sequences.

Figure 2.7 shows an example of a multidrop configuration between a

Multiplexer and DS1100 scanners.

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Datalogic DS1100 SH2347 Manual de instalación Pagina 19