DS2400N
3
RS485 Half-Duplex Interface
The RS485 half-duplex interface (3 wires + shield) is used for polled communication
protocols.
It can be used in a master/slave layout or for Multidrop connections with a Datalogic
Multiplexer, (see par. 3.6.4 and 3.6.5).
The connector pinout follows:
Pin Name Function
2 RTX485+ RS485 transmit/receive data +
4 RTX485- RS485 transmit/receive data -
7 SGND signal ground
RTX485 +
2
RTX485 -
4
RTX485 +
RTX485 -
7
SGND
MULTIPLEXER
RS485REF
DS2400N
1
Chassis
Figure 21 - RS485 Half-duplex Connections
This interface is forced by software when the protocol selected is MUX32 protocol.
In a Multiplexer layout or for slaves, the Multidrop address must also be set via serial
channel by the Genius™ utility or by the Host Programming Mode.
Errore. L'origine riferimento non è stata trovata. shows a multidrop configuration
with DS2400N scanners connected to a Multiplexer.
CAUTION
This is an example of multidrop wiring. Consult the multiplexer
manual for complete wiring instructions.
36
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