Com1/2 Connector; Com3/4 Connector - JHCTech KMDA-3601 User Manual

7
8
Note: NC represents —No Connection

2.4.8 COM1/2 Connector

The KMDA-3601 provides 2 serial ports of COM1/2 by 2*D-sub 9-pin connectors. COM1/2
configured as RS232、RS422 or RS485 by BIOS setup.
Table 2.9: COM1/2 Serial Ports Pin Assignments
Pin
1
2
3
4
5
6
7
8
9

2.4.9 COM3/4 Connector

COM3/4 are only for RS232. We can configure the power mode(RI/5V/12V) by jumper' setting, please
refer to the chapter "2.3.2 JP3/JP4-COM3/COM4 RI/5V/12V Power supply Select" .
assignments.
GND 15
GND
Figure 2.16 COM1/2 Connector
RS-232 Signal RS-422 Signal
DCD TX-
RxD TX+
TxD RX+
DTR RX-
GND GND
DSR NC
RTS NC
CTS NC
RI NC
19
SCL
Table 2.9 for pin assignments.
RS-485 Signal
DATA-
DATA+
NC
NC
GND
NC
NC
NC
NC
User's Manual
can be
Table 2.10 for pin