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16
Chapter 2 Hardware Installation
Chapter 2
COM1/COM2 RS232/Power Select
A61
Battery
A61
JP4 (for COM1)
JP7 (for COM2)
JP4 (for COM 1) and JP7 (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 JP4’s and
JP7’s settings respectively.
COM 1
COM 1/COM 2
1
2345
6789
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
JP4 (for COM 1)
1-3 (RI-), 2-4 (DCD-) On:
RS232 (default)
3-5 (+5V), 4-6 (+12V) On:
RS232 with power
JP7 (for 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
2 4
6
1
3
5
2 4
6
1
3
5
COM 2
2
19
2
19
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