Advantech UNO-148 - COM Connector

17 UNO-148 User Manual
Chapter 2 Hardware Functionality
2.2.9 COM Connector
UNO-148 has 4 x 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).
Table 2.2: COM Connector Pin Assignments
Pin COM1 Mode Signal Name Pin COM2 Mode Signal Name
1
RS232 CTS
2
RS232 CTS
RS422 T- RS422 T-
RS485 D- RS485 D-
3
RS232 RXD
4
RS232 RXD
RS422 T+ RS422 T+
RS485 D+ RS485 D+
5
RS232 TXD
6
RS232 TXD
RS422 R+ RS422 R+
RS485 RS485
7
RS232 RTS
8
RS232 RTS
RS422 R- RS422 R-
RS485 RS485
9
RS232 GND
10
RS232 GND
RS422 GND RS422 GND
RS485 GND RS485 GND