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P in
P in Name
1
RS485_ D3-
2
NC
3
RS485_D3+
4
NC
5
NC
6
NC
7
NC
8
NC/+5V/+12V
9
GND
P in
P in Name
1
RS422_TX3-
2
NC
3
RS422_TX3+
4
NC
5
RS422_RX3+
6
NC
7
RS422_RX3-
8
NC/+5V/+12V
9
GND
N o te 1: COM3 RS-232/422/485 can be set by BIOS setting. Default is RS-232.
N o te 2: Pin#8 function can be set by JP3. The maximum driving current in power
supply mode is 0.5A.
Chapter 2 – Hardware Information
R S485
Sig nal Type
I/O
I/O
PWR
GND
R S422
Sig nal Type
OUT
OUT
IN
IN
PWR
GND
Sig nal Level
±5V
±5V
+5V/+12V
Sig nal Level
±5V
±5V
+5V/+12V
33
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