Lantronix 900-422 User Manual
3: Installation and Hardware
XPress DR+ User Guide
18
Figure 3-2. Front Panel Layout
Serial Interface
The XPress-DR+ supports RS-232 via RJ45 connectors. It also supports RS-422/485 via
screw terminals (Serial Port 2 only).
screw terminals (Serial Port 2 only).
Note:
Serial Port 2 supports
RS232, RS422, and RS485, but only one mode at a
time. This means you can use either the RJ45 connector or the terminal block,
not both.
not both.
The serial RJ45 serial connectors support RS232, up to 230400 bits per second.
Table 3-1. RJ45
Serial Connector Pinouts
Pin Direction
Name
Function
1
Output from DR+ RTS
Ready To Send
2
Output from DR+ DTR
Data Terminal Ready
3
Output from DR+ TXD
Transmitted Data
4 Ground
GND Signal
Ground
5 Ground
GND Signal
Ground
6
Input to DR+
RXD
Received Data
7
Input to DR+
DSR
Data Carrier Detected
8
Input to DR+
CTS
Clear To Send
Figure 3-3. RJ45 Connector – Front View