DFI EC300 Series - Manual (Page 65)

65
4
Jumper Settings
EC300/310/320/321-CR6881
COM 3 to COM 6 RS232/RS422/RS485 Select
JP1 JP2 JP5 JP8
COM 3
(JP1)
COM 4
(JP2)
COM 5
(JP5)
COM 6
(JP8)
1-2 On: RS232
(default)
3-4 On: RS422
Full Duplex
5-6 On: RS485
6 4 2
5 3 1
JP1 (for COM 3), JP2 (for COM 4), JP5 (for COM 5) and JP8 (for COM 6) 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.
JP1 / JP2 / JP5 / JP8
6 4 2 6 4 2
5 3 1 5 3 1
COM 3 / COM 4 / COM 5 / COM 6
DCD TXD RXD DT
R
GND
1 2 3 4 5
6 8 9 7
DSR CT
S
RT
S
RI
RX+ TX+ RX
-
TX
-
GND
1 2 3 4 5
6 8 9 7
N.C. N.C. N.C. N.C.
D
ATA
+
N.C. D
ATA
-
N.C. GND
1 2 3 4 5
6 8 9 7
N.C. N.C. N.C. N.C.