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COM 3 and COM 4 RS232/Power Select
JP4
COM 4
(JP4)
JP2 and JP4 are used to confi gure COM 3 and COM 4 to pure RS232 or RS232
with power.
The pin function of COM 3 and COM 4 will vary according to JP2's and JP4's set-
ting respectively.
1-3, 2-4 On:
RS232 (default)
JP2
COM 3
(JP2)
JP2 / JP4
2
4
6
1
3
5
3-5(+12V), 4-6(+5V) On:
COM 3 / COM 4
1 2 3 4 5
6
8 9
7
Jumper Settings
2
4
6
1
3
5
RS232 with power
1 2 3 4 5
6 7 8 9
4
75
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