Datalogic Scanning DS4300 manual RS485 Half-Duplex, Multiplexer

DATALOGIC DS4300

RS485 Half-Duplex

The RS485 half-duplex (3 wires + shield) interface 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. 2.6.4 and 2.6.5).

The following pins of the 25-pin connector are used for RS485 half-duplex communications:

Pin	Name	Function
2	RTX485+	RS485 transmitted/received data +
4	RTX485-	RS485 transmitted/received data -
7	SGND Main	signal ground main interface
	DS4300	MULTIPLEXER

2RTX485+

4RTX485-

7SGND Main

RTX485+

RTX485-

RS485REF

Figure 2.16 - RS485 half-duplex connections

Installation - 2.13