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4
Jumper Settings
EC200/210/220/221-LR4G65
COM 3 and COM 4 RS232/RS422/RS485 Select
JP1 (for COM 3) and JP3 (for COM 4) are used to confi gure the COM ports to
RS232, RS422 (Full Duplex) or RS485.
The pin function of the COM ports will vary according to the jumper's setting.
2
1
1-2 On: RS232
(default)
1 2 3 4 5
6
74
JP1
JP3
COM 3
COM 4
(JP1)
(JP3)
4
6
3
5
8 9
7
JP1 / JP3
2
4
6
1
3
5
3-4 On: RS422
Full Duplex
COM 3 / COM 4
1 2 3 4 5
6
7
8 9
2
4
6
1
3
5
5-6 On: RS485
1 2 3 4 5
6
7
8 9
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