Spectra SAM-3040D - COM 3 RS232;RS422;RS485 Select

28
2
Hardware Installation
COM 3 RS232/RS422/RS485 Select
JP11
1-2 On: RS232
(default)
3-4 On: RS422
Half Duplex
5-6 On: RS485
64
2
531
JP11 is used to congure COM 3 to RS232, RS422 (Half Duplex) or RS485.
The pin function of COM 3 will vary according to the jumper’s setting.
6
1
5
2
JP11
COM 3
64
2
64
2
531 531
1 9
2
DCD-
TD
RD
DTR-
GND
RTS-
DSR-
CTS-
RI-
1 9
2
RXD+
N.C.
RXD-
N.C.
N.C. N.C.
N.C.
N.C.
N.C.
1 9
2
DATA+
N.C.
DATA-
N.C.
N.C. N.C.
N.C.
N.C.
N.C.