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b. J3: Compact Flash Master/Slave Selection
The Compact Flash socket (on the bottom side) is optional and supports 3.3V
Compact Flash and Micro Drives. J3 is used to select master/slave device of this
socket. Be sure to ward off the same master/slave setting with which connects
to IDE1 connector, if you use IDE1 and compact flash simultaneously.
c. JP2 and JP3: COM2- R232/422/485 Selection
The DB9 (COM2) is standard serial port connector. The following tables show the
signal connections of DB9. Serial port 2 is designed for multiple proposes. Use JP2
selects the RS-232, RS-422 or RS-485
JP
1
3
12
10
10
JP
1
2
6
5
RS-232
Factory Preset
c-1. JU6 and JU7:COM1 and COM2 Power Source Selection
The COM1/COM2 Serial ports provide power source will driver the "RI" signal pin,
and JU7 (COM1) and JU6 (COM2) were located on the power output position.
1 2
3
Master
JP3
JP
1
1
1
10
JP2
1
1
2
6
5
5
RS-422
RS-485
JU7
1
2
3
COM1
Pin9: RI1
Factory Preset
1 2
3
COM1
PIN9:+5v
J3
1
2
3
Slave
DB-9
3
1
6
2
7
12
3
JP
8
4
2
9
-RI2/+5V/+12V
5
6
Metal
Case Ground
Note: COM1/2-Pin9/RI1/2 Signal by JU6/JU7
JU6
1 2
3
COM Pin9: RI
Factory Preset
2
3
1
COM2
PIN9:+12v
22
RS-232
RS-422
RS-485
-DCD2
TX-
-DSR2
RXD2
RX+
-RTS2
-TXD2
TX+
-CTS2
-DTR2
RX-
Ground
485-
485+
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