Com3/4 Connector - JHCTech KMDA-2602 User Manual

5
6
7
8
9
Note: NC represents —No Connection

2.4.7 COM3/4 Connector

COM3/4 are only for RS232. The Pin assignments are as follows.
Table 2.7: COM3/4 Serial Port Pin Assignments
Pin\Type
1
3
5
7
9
GND GND
DSR NC
RTS NC
CTS NC
RI NC
Figure 2.19 COM3/4 Connector
Signal Name Pin\Type
DCD 2
TxD 4
GND 6
RTS 8
RI
19
User's Manual
GND
NC
NC
NC
NC
Signal Name
RxD
DTR
DSR
CTS