Rs485 Full-Duplex Interface - Datalogic DS1500 Reference Manual

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RS485 Full-Duplex Interface

The RS485 full-duplex (5 wires + shield) interface is used for non-polled
communication protocols in point-to-point connections over longer distances (max
1200 m / 3940 ft) than those acceptable for RS232 communications or in electrically
noisy environments.
The connector pinout follows:
Pin
6
2
3
10
4
DS1500
14
Name
TX485+
TX485-
RX485+
RX485-
SGND
TX485+
6
TX485-
2
RX485+
3
RX485-
10
SGND
4
13
Figure 8 - RS485 Full-duplex Connections
Function
RS485 transmit data +
RS485 transmit data -
RS485 receive data +
RS485 receive data -
signal ground
USER INTERFACE
+
RX485
-
+
TX485
-
SGND
SHIELD
Earth Ground
DS1500