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CS331-C246/Q370
Chapter 2
- Hardware Installation
17
JP7 (COM 2)
COM1/COM2 RS232 Power Select
2
2
G2
I C
Ba
ttery
COM 2
COM 1
2
1
9
JP4 (COM 1)
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 setting respectively.
1 2 3 4 5
6 7 8 9
2
1
9
Pin
RS232
RS232 with power
1
DCD-
+12V
2
SIN-
SIN-
3
SO-
SO-
4
DTR-
DTR-
5
GND
GND
6
DSR-
DSR-
7
RTS-
RTS-
8
CTS-
CTS-
9
RI-
+5V
▼
JP4 (COM 1)
1-3 (RI-), 2-4 (DCD-) On:
RS232 (default)
3-5 (+5V), 4-6 (+12V) On:
RS232 with power
▼
JP7 (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
►
Jumper Settings
▼
COM 1/COM 2
