Quanmax QDSP-207B - Figure 6 COM Port

Chapter 2
20
QDSP-207
B
User’s Manual
 COM port
COM port with the pin definitions.
Pin RS-232 RS-422
Half Duplex
RS-485
Full Duplex
RS-485
1 DCD TX
-
DATA
-
TX
-
2 RXD RX+ NA RX+
3 TX
D
TX
+
DATA
+
TX
+
4 DT
R
RX
-
NA RX
-
5 GND GND GND GND
6 DS
R
NA NA NA
7 RT
S
NA NA NA
8 CT
S
NA NA NA
9 RI / +5V
*
NA / +5V
*
NA / +5V
*
NA / +5V
*
Fi gure 6 COM port