Chapter 2 – DFI HD636-H81CS User Manual
Page 17

17
Chapter 2 Hardware Installation
Chapter 2
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COM 8 RS232/422/485 Select
JP2, JP17 and JP18 are used to configure the COM port 8 to RS232, RS422 (Full Duplex) or
RS485.
The pin functions of the COM port 8 will vary according to these jumpers’ setting.
JP17
JP2
COM 8:
RS232/422/485
6
4
2
5
3
1
6
4
2
5
3
1
JP2
5-6 On: RS485
6
4
2
5
3
1
1-2 On: RS232
(default)
3-4 On: RS422
Full Duplex
6
4
2
5
3
1
6
4
2
5
3
1
JP17 and JP18
1-3, 2-4 On:
RS232 (default)
3-5, 4-6 On:
RS422 Full Duplex/RS485
RS232
RXD
DCD- TXD
D
TR
-
GND
DSR
-
RT
S-
CTS-
RI
-
RS422
Full Duplex
RXD-
RXD+ TXD+
TXD-
NC.
NC.
NC.
NC.
NC.
RS485
DA
TA
-
D
ATA
+
NC.
NC.
NC.
NC.
NC.
NC.
COM 8
JP18
10
2
1
9
10
2
1
9
10
2
1
9
10
2
1
9
Note:
When COM 8 RS232/422/485 is selected, JP17 and JP18 must be set in accordance to
JP2.
NC.
See also other documents in the category DFI Motherboard:
- AR100-DR (112 pages)
- G7B630-N (127 pages)
- G7B630-N (154 pages)
- BT100 (71 pages)
- HR100-CRM (170 pages)
- BT103 (72 pages)
- BT161 (71 pages)
- CM100-C (70 pages)
- CD101-N (69 pages)
- CD102 Series (76 pages)
- CP100-NRM (150 pages)
- CR101-D (67 pages)
- CR100-CRM (177 pages)
- EL339-B (109 pages)
- G5C100-NR (160 pages)
- HD100-H81 (79 pages)
- HD101-H81 (83 pages)
- HD173-H81 (70 pages)
- HM100-QM87 (97 pages)
- HM103-QM87 (99 pages)
- HU103 (95 pages)
- KB161 (68 pages)
- HU173 (90 pages)
- LR100-N18M/N18S (126 pages)
- LR102-B18M (138 pages)
- EL630-NR (149 pages)
- NP101-D16C (150 pages)
- SB102-D (60 pages)
- NP102-N16C (144 pages)
- MB630-CRM (171 pages)
- SB630-CRM (184 pages)
- SB630-CRM (183 pages)
- SR100-L20C (144 pages)
- SR100-N (152 pages)
- LT600-L (149 pages)
- G7B630-N (147 pages)
- CA331-P (131 pages)
- EL330-DR (142 pages)
- CP337-NRM (174 pages)
- HD310-Q87 (101 pages)
- EL620-C (192 pages)
- G7L630-B (133 pages)
- HD330-H81 (81 pages)
- HD330-Q87 (85 pages)
- HD332-H81 (76 pages)