DFI NP102-N16C - Manual (Page 23)

23
2
Hardware Installation
COM1/COM2 RS232/RS422/RS485 Select
JP9 for COM2
1-2 On: RS232
(default)
3-4 On: RS422
Full Duplex
5-6 On: RS485
JP9 and JP11 are used to configure COM2 and COM1 respectively to RS232,
RS422 (Full Duplex) or RS485.
The pin function of COM1 and COM2 will vary according to the jumper’s setting.
JP9 / JP11
COM1/COM2
JP11 for COM1
6 2
5 3 1
4 6 2
5 3 1
4
5 3 1
6 2 4
DCD- TD RD D
TR
-
GND
1 2 3 4 5
R
T
S-
RI
-
DSR
-
CT
S-
6 7 8 9
DA
TA+
N.C. DA
TA
-
N.C. N.C.
1 2 3 4 5
N.C. N.C. N.C. N.C.
6 7 8 9
RXD+ TXD+ RXD- TXD- N.C.
1 2 3 4 5
N.C. N.C. N.C. N.C.
6 7 8 9
6 2 4
5 3 1