Figure 7 Com Ports - Quanmax QBOX-2600 User Manual

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COM Ports
COM ports with the pin definitions.
QBOX-2600 User's Manual
COM1 RS-232/422/485 Port 1 D-SUB 9P
Pin RS-232
1 DCD
2 RXD
3 TXD
4 DTR
5 GND
6 DSR
7 RTS
8 CTS
9 +5V
COM2 RS-232/422/485 Port 2 D-SUB 9P
Pin RS-232
1 DCD
2 RXD
3 TXD
4 DTR
5 GND
6 DSR
7 RTS
8 CTS
9 +5V

Figure 7 Com ports

COM 1 COM 2
Half Duplex
RS-422
RS-485
TX- DATA-
RX+ N/A
TX+ DATA+
RX- N/A
GND GND
N/A N/A
N/A N/A
N/A N/A
+5V +5V
Half Duplex
RS-422
RS-485
TX- DATA-
RX+ N/A
TX+ DATA+
RX- N/A
GND GND
N/A N/A
N/A N/A
N/A N/A
+5V +5V
24
Chapter 2
Full Duplex
RS-485
TX-
RX+
TX+
RX-
GND
N/A
N/A
N/A
+5V
Full Duplex
RS-485
TX-
RX+
TX+
RX-
GND
N/A
N/A
N/A
+5V