DFI EL620-C - COM1 COM2 RS232;RS422;RS485 Select

27
2
Hardware Installation
REV.1
COM 1 COM 2 RS232/RS422/RS485 Select
JP6 (for COM1) and JP2 (for COM2) are used to congure the COM ports to
RS232, RS422 (Half Duplex) or RS485.
JP2/JP6
COM 1
COM 2
JP2
JP6
6
2
5
1
6
2
5
1
1-2 On: RS232
(default)
6
4
2
5
3
1
3-4 On: RS422
Half Duplex
6
4
2
5
3
1
5-6 On: RS485
6
4
2
5
3
1
RS232 RS422
Half Duplex
RS485
DCD- TD RD DTR- GND
1 2 3 4 5
RTS-
RI-
DSR-
CTS-
6 7 8 9
DATA+ N.C. DATA- N.C. N.C.
1 2 3 4 5
N.C. N.C. N.C. N.C.
6 7 8 9
COM 1 / COM 2
RXD+ N.C. RXD- N.C. N.C.
1 2 3 4 5
N.C. N.C. N.C. N.C.
6 7 8 9