Installation manual

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
5
4
7
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.