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JP7 (4-pin): COM3 Header Pin9 Function Select
JP8 (4-pin): COM4 Header Pin9 Function Select
JP7→COM3 Header
6
5
4
3
2
1
2-4 Closed:
RI=RS232;
JP8→COM4 Header
6
5
4
3
2
1
2-4 Closed:
RI=RS232;
13
6
6
5
4
4
3
2
2
1
3-4 Closed:
4-6 Closed:
RI= 5V;
RI= 12V.
6
6
5
4
4
3
2
2
1
3-4 Closed:
4-6 Closed:
RI= 5V;
RI= 12V.
5
3
1
5
3
1
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