15
2007 RuggedCom Inc. All rights reserved
Rev100
Pin
RS232 Mode
RS485 Mode
RS422 Mode
1
CD
-
-
2
TX
TX/RX+ (A)
TX+
3
RX
-
RX+
4
DTR
-
-
5
6
DSR
-
RX-
7
CTS
TX/RX - (B)
TX-
8
RTS
-
9
RI (NC)
-
-
Shield
Common (Isolated Ground)
Chassis Ground
Figure 10: DB9 Port pin-out
NOTE:
Pins 1, 4, and 6 are connected internally. Pins 7 and 8 are connected internally. No internal
termination is provided.
3.1.3 RS232/RS485/RS422 via RJ45
Each port is individually selectable via software to be RS232, RS485 or RS422. The RJ45 port and
pin-out is shown in Figure 11.