Dfi CA331-NR User Manual Page 28

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28
2
Hardware Installation
COM 3 RS232/RS485 Select
JP3
JP3isusedtocongureCOM3toRS232orRS485.
The pin function of COM 3 will vary according to JP3’s setting.
JP3
COM 3
1-2 On: RS232
(default)
5-6 On: RS485
Half Duplex
6
2
531
4
DCD-
TD
RD
DTR-
GND
RTS-
DSR-
CTS-
RI-
1
9
2
DATA+
N.C.
DATA-
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
1
9
2
COM 3
6
2
531
4
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