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J2, J3: COM3 RS-232/422/485 Selection
Pin signal setting for COM3.
Connector type: 2.00 mm pitch 2x3-
pin headers
J2
Description
Sets Pin-1 to DSR#
1-3 short
(Default)
3-5 short Sets Pin-1 to TX+
Sets Pin-2 to DCD
2-4 short
(Default)
4-6 short Sets Pin-2 to TX-
J3
Description
Sets Pin-7 to CTS#
1-3 short
(Default)
3-5 short Sets Pin-7 to RX+
Sets Pin-8 to RTS#
2-4 short
(Default)
4-6 short Sets Pin-8 to RX-
1
1
1
4
3
1
1
2
6
1
5
2
6
1
5
2
6
1
5
2
6
1
5
2
6
1
5
2
6
1
5
2
6
1
5
2
6
1
5
- 10 -
- 10 -
30
2
29
1
4
1
1
4
1
5
1
1
9
10
1
2
3
4
1
1
4
J3
41
5
1
7
1
5
1
5
1
9
1
6
2
8
2
6
2
6
2
10
2
J2
42
5
1
1
5
1
5
1
6
1
6
2
6
2
2
1
1
Installation
1
2
1
19
1
20
2
5 6
1
25
1
3
1
26
2
4
2
1
43
1
1
1
2
9
1
2
1
2
10
44
9
1
2
10
1
2
1
51
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