CBX800 INSTALLATION MANUAL
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:
Figure 17 - RS485 Full-duplex Connections
For applications that do not use RX485 signals, do not leave these lines floating but
connect them to SGND as shown below.
Figure 18 - RS485 Full-duplex Connections using Only TX Signals
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