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COM 1 and COM 2 RS232/RS422/RS485 Select
JP3
1
5
6
2
JP4
JP3 and JP4 are used to configure COM 1 and COM 2 to RS232, RS422 (Half Du-
plex) or RS485.
The pin function of COM 1 and COM 2 will vary according to their jumper's set-
ting.
5
3
1
6
4
2
1-2 On: RS232
(default)
2
1
9
JP3 / JP4
5
3
1
6
4
2
3-4 On: RS422
Half Duplex
COM 2
2
1
9
Hardware Installation
5
3
1
6
4
2
5-6 On: RS485
2
1
9
2
25
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