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2.3.12 COM3/4（RS232）
Table 2.13：COM3/4 Serial Ports Pin Assignments
2.3.13 8-bit GPIO Connector (GPIO)
PADR-M101 provides a 8-bit DIO by a 2*5pin connector. Table 2.14 for pin assignments.
Table 2.14：8-bit DIO Pin Assignments
DCD
RxD
TxD
DTR
GND
DSR
RTS
CTS
RI
Pin
1
2
3
4
5
6
7
8
9
10
TX-
DATA-
TX+
DATA+
RX+
NC
RX-
NC
GND
GND
NC
NC
NC
NC
NC
NC
NC
NC
RS-232 Signal
DCD
RXD
TXD
DTR
GND
DSR
RTS
CTS
RI
NC
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