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Pin
Signal
DIO6
7
DIO7
8
+5V
9
GND
10
2.4.13
COM 1/COM 2 Connector RS232/RS422/RS485 (CN40)
Pin
Pin Name
1
DCD1
6
DSR1
2
RX1
7
RTS1
3
TX1
8
CTS1
4
DTR1
9
RI1
5
GND
10
DCD2
15
DSR2
Chapter 2 – Hardware Information
Signal Type
I/O
I/O
PWR
GND
Signal Type
RS-422
IN
RS422_TX-
IN
IN
RS422_TX+
OUT
OUT
RS422_RX+
IN
OUT
RS422_RX-
IN
GND
IN
RS422_TX-
IN
Signal Level
+5V
+5V
+5V
RS-485
RS485_D-
RS485_D+
RS485_D-
25
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