DFI HD620-H81 - Manual (Page 17)

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17
Chapter 2 Hardware Installation
Chapter 2
COM 1/COM 2 RS232/422/485 Select JP2 (for COM 1)/ JP16 (for COM 2)
RS485
COM 1/ COM 2
6 7 8 9
N.C. N.C. N.C. N.C.
1-2 On: RS232
(default)
1
3
5
2
4
6
RS422
Full Duplex
3-4 On: RS422
Full Duplex
1
3
5
2
4
6
5-6 On: RS485
1
3
5
2
4
6
JP16 JP2
COM 1/ COM 2:
RS232/422/485
COM 2
COM 1
2 3
JP18 JP17
JP19
JP20
6
4
2
5
3
1
1-3, 2-4 On:
RS232 (default)
3-5, 4-6 On:
RS422 Full Duplex/RS485
Note:
When COM 1 RS232/422/485 is selected, JP17 and JP18 must be set in accordance
to JP2. And when COM 2 RS232/422/485 is selected, JP19 and JP20 must be set in
accordante to JP16.
JP17 and JP18 (for COM 1)/ JP19 and JP20 (for COM 2)
6
4
2
5
3
1
These jumpers allow you to configure the Serial COM ports to RS232, RS422 (Full Duplex) or
RS485. JP2, JP17 and JP18 are used to configure the Serial COM port 1. JP16, JP19 and JP20
are used to configure the Serial COM port 2. The pin functions of Serial COM ports 1 and 2
will vary according to these jumpers’ setting.
DCD- TD RD DT
R-
GND
1 2 3 4 5
RS232
RT
S-
RI
-
DSR
-
CTS-
6 7 8 9
RXD+ TXD+ RXD- TXD- N.C.
1 2 3 4 5
D
ATA
+
D
ATA
-
1 2 3 4 5
N.C. N.C. N.C.
N.C. N.C. N.C. N.C.
6 7 8 9