Com Connector - Advantech UNO-137 User Manual

2.2.5

COM Connector

UNO-137 has 2 COM RS232/422/485 ports of terminal block type. They offer trans-
mission speeds of 50 ~115.2 kbps.
The default mode for both COM ports (COM1&COM2 )is RS-232 Mode. Settings can
be adjusted via an on-board switch (SW1).
(Please refer to User Manual- Appendix A.8 for RS232/422/485 settings).
Table 2.2: COM Connector Pin Assignments
Pin
1
3
5
7
9
UNO-137 User Manual
COM1 Mode Signal Name Pin
RS232 CTS
RS422 T-
RS485 D-
RS232 RXD
RS422 T+
RS485 D+
RS232 TXD
RS422 R+
RS485
RS232 RTS
RS422 R-
RS485
RS232 GND
RS422 GND
RS485 GND
COM2 Mode
RS232
2 RS422
RS485
RS232
4 RS422
RS485
RS232
6 RS422
RS485
RS232
8 RS422
RS485
RS232
10 RS422
RS485
12
Signal Name
CTS
T-
D-
RXD
T+
D+
TXD
R+
RTS
R-
GND
GND
GND