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JP6 (4-pin): COM1 Port Pin9 Function Select
JP5 (4-pin): COM2 Header Pin9 Function Select
JP6→COM1
2
4
6
1
3
5
2-4 Closed:
RI=RS232;
JP5→COM2
2
4
6
1
3
5
2-4 Closed:
RI=RS232;
12
2 4 6
1 3 5
3-4 Closed:
4-6 Closed:
RI= 5V;
RI= 12V.
2 4 6
1 3 5
3-4 Closed:
4-6 Closed:
RI= 5V;
RI= 12V.
2 4 6
1 3 5
2 4 6
1 3 5
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