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2.4.7 COM1/2 Connector
The KMDA-3201 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
2.4.8 COM3/4/5/6 Connector
COM3/4/5/6 are only for RS232. The Pin assignments are as follows:
(NOTE: KMDA-3201-T00X has no COM5/6 interface)
Figure 2.18 COM1/2 Connector
RS-232 Signal
DCD
RxD
TxD
DTR
GND
DSR
RTS
CTS
RI
Figure 2.19 COM3/4/5/6 Connector
Table 2.10: COM3/4/5/6 Serial Port Pin Assignments
Pin
Signal
1
DCD
3
TxD
5
GND
7
RTS
9
RI
Table 2.9 for pin assignments.
RS-422 Signal
RS-485 Signal
TX-
DATA-
TX+
DATA+
RX+
NC
RX-
NC
GND
GND
NC
NC
NC
NC
NC
NC
NC
NC
Pin
Signal
2
RxD
4
DTR
6
DSR
8
CTS
19
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