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5
6
7
8
9
Note: NC represents —No Connection
2.4.7 COM3/4 Connector
COM3/4 are only for RS232.
2.4.8 COM9/10 Connector
GND
DSR
RTS
CTS
RI
Figure 2.20 COM3/4 Connector
Table 2.7 for pin assignments.
Table 2.7: COM3/4 Serial Port Pin Assignments
Pin
Signal
1
DCD
3
TxD
5
GND
7
RTS
9
RI
Figure 2.21 COM9/10 Connector
GND
GND
NC
NC
NC
NC
NC
NC
NC
NC
Pin
Signal
2
RxD
4
DTR
6
DSR
8
CTS
19
User's Manual
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