Datalogic BA100 Instruction Manual page 37

Host 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 CBX800 pinout follows:
Pinout
TX+
RX+
TX-
RX-
SGND
For applications that do not use RX485 signals, do not leave these lines floating but
connect them to SGND as shown below.
NOTE
Function
RS485 Transmit Data +
RS485 Receive Data +
RS485 Transmit Data -
RS485 Receive Data -
Signal Ground
CBX800
Figure 17 - RS485 Full-duplex Connections
CBX800
Figure 18 - RS485 Full-duplex Connections using Only TX Signals
CBX800 INSTALLATION MANUAL
USER INTERFACE
RX485+ TX485+
SGND RX485- TX485-
SGND TX+ RX+
TX- RX-
USER INTERFACE
RX485+
SGND RX485-
SGND TX+
TX-
17