Quanmax QBOX-207T - Figure 6 COM Ports

Chapter 2
18
QBOX-207T User’s Manual
COM3~4 RS-232 Port DB-9
Pin
RS-232
1
DCD
2
RXD
3
TXD
4
DTR
5
GND
6
DSR
7
RTS
8
CTS
9
+5V
Figure 6 COM ports
 Digital Input / Output
DIO port with the pin definitions.
Digital Input / Output D-SUB 9P
Pin
Signal Name
1
Digital Input 0
2
Digital Output 0
3
Digital Input 1
4
Digital Output 1
5
Digital Input 2
6
Digital Output 2
7
Digital Input 3
8
Digital Output 3
9
+5V
Figure 7 DIO port
DIO