Figure 6 Com Port - Quanmax QDSP-2090 Series User Manual


COM port
COM port with the pin definitions.
COM
QDSP-2090 Series User's Manual
Pin RS-232
1 DCD
2 RXD
3 TXD
4 DTR
5 GND
6 DSR
7 RTS
8 CTS
9 RI

Figure 6 COM port

Half Duplex
RS-422
RS-485
TX- DATA-
TX+ DATA+
RX+ NA
RX- NA
GND GND
NA NA
NA NA
NA NA
NA NA
Chapter 2
Full Duplex
RS-485
TX-
TX+
RX+
RX-
GND
NA
NA
NA
NA