DFI NP951-B16C - Manual (Page 24)

24
2
Hardware Installation
COM 2 RS232/RS422/RS485 Select
JP9
1-2 On: RS232
(default)
3-4 On: RS422
Full Duplex
5-6 On: RS485
6
4
2
5
3
1
6
4
2
5
3
1
6
4
2
5
3
1
JP9 is used to configure COM 2 to RS232, RS422 (Full Duplex) or RS485.
The pin function of COM 2 will vary according to the jumper’s setting.
JP9
COM 2
2 1
9
DCD-
TD
GND
RTS-
RI-
RD
DTR-
DSR-
CTS-
2 1
9
DATA+
N.C.
N.C.
N.C.
N.C.
DATA-
N.C.
N.C.
N.C.
COM 2
2 1
9
RXD+
TXD+
N.C.
N.C.
N.C.
RXD-
TXD-
N.C.
N.C.