DS2200
DATALOGIC
6 - Installation
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).
The connector pinout follows:
Pin
Name
Function
5
RS485 + transmitted/received data
4
RTX485-
RS485 - transmitted/received data
7
SGND
Signal Ground
DS2200
USER INTERFACE
5
RTX485-
4
RTX485-
7
SGND
RS485REF
Figure 2.5 - 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.
The figure on the next page shows an example of a multidrop configuration
between a Multiplexer and DS2200 scanners.
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