DFI CR100-CRM - Manual (Page 27)

27
2
Hardware Installation
COM1/COM2 RS232/RS422/RS485 Select
5-6 On: RS485
JP4 (for COM1) and JP5 (for COM2) are used to confi gure the COM ports to
RS232, RS422 (Full Duplex) or RS485.
The pin function of the COM ports will vary according to the jumper’s setting.
JP4/JP5
6 4 2
5 3 1
COM 1
COM 2
JP4
JP5
RS232 RS422
Full Duplex
RS485
COM 1
DCD- TD RD DT
R
-
GND
1 2 3 4 5
RT
S
-
RI
-
DSR
-
CT
S-
6 7 8 9
D
ATA
+
N.C. D
ATA
-
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 4 2
5 3 1
1-2 On: RS232
(default)
3-4 On: RS422
Full Duplex
6 4 2
5 3 1