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JV1: COM1 Port Power Support
Sets the voltage flow level for the Pin-1 of
COM1 port.
Connector type:
2.00mm pitch 1x3-pin headers.
Pin
Description
1-2
pin-1 voltage flow at
short
+5V (Default)
2-3
pin-1 voltage flow at
short
+12V
JTM3: RS-422/485 Select
Use this jumper to select RS-422 or
RS-485 mode for COM3 or COM4.
Connector type:
2.00 mm pitch 2x4-pin headers
Port
Terminator Description
RS-422 mode
COM3
RS-485 mode
RS-422 mode
COM4
RS-485 mode
3
2
1
3
2
1
2
8
1
7
2
8
1
7
2
8
1
7
2
8
1
7
- 12 -
- 12 -
30
2
29
1
4
1
1
4
1
1
1
5
1
1
1
10
1
2
4
3
4
3
1
1
1
1
4
JV1
9
5
1
7
1
5
1
5
1
9
1
6
2
8
2
6
2
6
2
2
10
1
5
5
5
1
1
1
6
2
1
6
2
6
2
1
1
30
2
29
1
4
1
1
4
1
1
1
5
1
1
1
10
1
2
4
3
4
3
1
1
1
1
4
JTM3
10
5
1
7
1
5
1
5
1
9
1
6
6
2
8
2
6
2
2
10
2
1
5
5
1
5
1
1
6
2
1
6
2
6
2
1
1
Installation
1
2
1
19
1
20
2
5 6
1
25
1
3
1
26
2
2
1
4
43
9
1
1
1
2
9
1
2
1
10
2
44
9
1
10
2
1
2
1
51
1
2
1
19
1
20
2
5 6
1
25
1
3
1
26
2
1
4
2
43
9
1
1
1
2
9
1
2
1
10
2
44
9
1
10
2
1
2
1
51
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