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2.2.2 Jumper Settings
Label
Function
JBAT1
Clear CMOS
JCP1
COM Ports Power Selection
JV1~JV4
RI/5V/12V (Pin 9) Selection for
Each of the 4 COM Ports
2.2.3 Pin Assignments for Connectors
PWRIN1 (Power Input)
Power Input Terminal Block Receptacle
Connector type: 4-pin terminal block
Pin
Description
1
DC input 10~28V
2
GND
3
GND-
4
Remote Power Button
The Engine of AU910/AU912
Jumper Settings
1-2: Keep CMOS
3
2
1
(default)
2-3: Clear CMOS
3
2
1
1-2: +5V (default)
3
2
1
2-3: +12V
3
2
1
1-2: RI (default)
3
2
1
2-3: 5V or 12V
3
2
1
(depends on JCP1)
1 2 3 4
SW
DC IN
10V~28V
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The Engine of AU910/AU912
CN1 (COM1 ~ COM4)
DB-44 female connector: Serial port 1 ~ 4
Pin
Desc.
Pin
Desc.
1
DCD
2
RXD
COM1
(RS-232)
3
TXD
4
DTR
5
GND
6
DSR
7
RTS
8
CST
9
RI
10
GND
COM3
21
DCD
22
RXD
(RS-232)
23
TXD
24
DTR
25
GND
26
DSR
27
RTS
28
CST
29
RI
30
GND
41
N/C
42
N/C
N/C
43
N/C
44
N/C
COM3, COM4 RS-485 PIN OUT
RS-485
Pin
Signal
Description
1
DATA-
TX/RXDATA-
2
DATA+
TX/RXDATA+
3
N/C
4
N/C
5
GND
Ground
6
N/C
7
N/C
8
N/C
9
N/C
1
15
44
31
Pin
Desc.
Pin
Desc.
11
DCD
12
RXD
COM2
(RS-232)
13
TXD
14
DTR
15
GND
16
DSR
17
RTS
18
CST
19
RI
20
GND
COM4
31
DCD
32
RXD
(RS-232)
33
TXD
34
DTR
35
GND
36
DSR
37
RTS
38
CST
39
RI
40
GND
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