www.dfi .com
18
Chapter 2 Hardware Installation
Chapter 2
COM1/COM2 RS232/Power Select
1
29
32
30
31
29
32
30
31
1
2
8
7
2
22
1
2
1
S1
S3
2
10
9
2
10
9
Battery
19
JP8
JP4
JP8 (for COM 1) and JP4 (for COM 2) are used to configure Serial COM ports to pure RS232
or RS232 with power. The pin functions of COM 1 and COM 2 will vary according to JP8’s and
JP4’s setting respectively.
COM 1
COM 2
10
2
1
9
COM 1/COM 2
1 2 3 4 5
6 7 8 9
Pin
RS232
RS232 with power
1
DCD-
+12V
2
RD
RD
3
TD
TD
4
DTR-
DTR-
5
GND
GND
6
DSR-
DSR-
7
RTS-
RTS-
8
CTS-
CTS-
9
RI-
+5V
JP8 (COM 1)
1-3 (RI-), 2-4 (DCD-) On:
RS232 (default)
3-5 (+5V), 4-6 (+12V) On:
RS232 with power
JP4 (COM 2)
2
4 6
1 3
5
2
4 6
1 3
5
1-3 (RI-), 2-4 (DCD-) On:
RS232 (default)
3-5 (+5V), 4-6 (+12V) On:
RS232 with power
10
2
1
9
2
4 6
1 3
5
2
4 6
1 3
5