DFI EC300 Series - Manual (Page 64)

64
4
Jumper Settings
COM 6 and COM 7 RS232/Power Select
JP9 and JP10 are used to confi gure COM 6 and COM 7 to pure RS232 or RS232
with power.
The pin function of COM 6 and COM 7 will vary according to JP9’s and JP10’s set-
ting respectively.
JP9 / JP10
COM 6 / COM 7
COM 6
(JP9)
COM 7
(JP10)
JP10 JP9
1-3, 2-4 On:
RS232 (default)
6 4 2
5 3 1
3-5(+12V), 4-6(+5V) On:
RS232 with power
6 4 2
5 3 1
DCD TXD RXD DT
R
GND
1 2 3 4 5
6 8 9 7
DSR CT
S
RT
S
RI
+5V TD RD DT
R
-
GND
1 2 3 4 5
RT
S
-
+12V DSR
-
CT
S-
6 7 8 9