
CBX800
INSTALLATION
MANUAL
21
NOTE
For applications that do not use RX485 signals, do not leave these lines floating but
connect them to SGND as shown below.
SGND RX485+ RX485-
USER INTERFACE
SGND TX+ TX-
CBX800
Figure 24 - RS485 Full-duplex Connections using Only TX Signals
DATA SOURCE AUXILIARY INTERFACE
The Data Source Auxiliary Interface available on the 9-pin connector below is used for configuring the external
reading device parameters.
5
1
6
9
Figure 25 - 9-pin D-Sub Female Connector
With reference to the 9-pin connector of Figure 25, the following pins are used to connect the Data Source
Auxiliary Interface:
Pin Name Function
2 TX Data Source Aux Interface Receive Data
3 RX Data Source Aux Interface Transmit Data
5 SGND
Signal Ground
1, 4, 6, 7, 8, 9
N.C.
RX TX
Reference
USER INTERFACE
Figure 26 – Data Source Auxiliary Interface Connections