Pin Description Pin Description
3 TX 8 CTS
4 DTR 9 RI
5 GND
Table 3-5: DB-9 Connector Pinouts
To install the RS-232 devices, follow the steps below.
Step 1: Locate the RJ-45 RS-232 connector. The location of the RJ-45 RS-232
connector is shown in Figure 1-4.
Step 2: Insert the RJ-45 connector. Insert the RJ-45 connector on the RJ-45 to DB-9
COM port cable to the RJ-45 RS-232 connector on the UPC-V315-QM77. See
Figure 3-29.
Figure 3-29: RJ-45 RS-232 Serial Device Connection
Step 3: Insert the serial connector. Insert the DB-9 connector of a serial device into
the DB-9 connector on the RJ-45 to DB-9 COM port cable.
Step 4: Secure the connector. Secure the serial device connector to the external
interface by tightening the two retention screws on either side of the connector.
3.7.11 RJ-45 RS-422/485 Serial Port
A RS-422/485 serial port device can be connected to the RS-422/485 serial port on the
bottom panel. The pinouts of the RS-422/485 serial port is shown below.
