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