DFI CR101-D - Manual (Page 15)

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15
Chapter 2 Hardware Installation
Chapter 2
COM1/COM2 RS232/RS422/RS485 Select
JP4 (for COM1) and JP13 (for COM2) are used to configure 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/JP13
5-6 On: RS485
6 4 2
5 3 1
COM 2
JP4
JP13
RS232 RS422
Full Duplex
RS485
COM 1
DCD- TD RD DT
R-
GND
1 2 3 4 5
RT
S-
RI
-
DSR
-
CTS-
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
COM 1
RXD+ TXD+ RXD- TXD- N.C.
1 2 3 4 5
6 7 8 9
N.C. N.C. N.C. N.C.
D
ATA
+
DA
TA
-
N.C. N.C. N.C. N.C.
6 7 8 9
1 2 3 4 5
N.C. N.C. N.C.
COM1/COM2 RS232 Power Select
JP1
JP14
1-3, 2-4 On: RS232
(default)
3-5 (+12V), 4-6 (+5V)
On: RS232 with power
1-3, 2-4 On: RS232
(default)
3-5 (+12V), 4-6 (+5V)
On: RS232 with power
2
1 3 5
4 6
1 3 5
2 4 6
1 3 5
2 4 6
1 3 5
2 4 6