Rs422 Full Duplex Interface - Datalogic Matrix 300N Series Product Reference Manual

CBX ELECTRICAL CONNECTIONS

RS422 Full Duplex Interface

The RS422 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 CBX pinout follows:
NOTE
66
MATRIX 300N
CBX100/500
TX+
RX+
TX-
RX-
SGND
Figure 41 - RS422 Full Duplex Connections
For applications that do not use RS422 transmission to the reader (termi-
nal block RX+ and RX- signals), do not leave these lines floating but con-
nect them to SGND as shown below.
Figure 42 - RS422 Full Duplex Connections Using Only TX Signals to Host
Description
RS422 Transmit Data +
RS422 Receive Data +
RS422 Transmit Data -
RS422 Receive Data -
Signal Ground
User Interface
RX422+ TX422+
SGND RX422- TX422-
Reader RX+
SGND TX+
TX-
User Interface
RX422+
SGND RX422-
SGND TX+
Reader
TX-
RX-