37
3
）
Serial Port
4）
Ethernet Port
5）
6）
Pin No.
Pin Name
Description
1
-
-
2
TXD
Transmit Data
3
RXD
Receive Data
4
Connect to Pin6
Equipment to Judge
5
GND
System Ground
6
Connect to Pin4
Equipment to Judge
7
CTS
Clear to Send
8
RTS
Request to Send
9
+5VDC
Output
Pin No.
Pin Name
1
TX+
2
TX-
3
RX+
4
-
5
-
6
RX-
7
-
8
-
