EPIA-N700 User’s Manual
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COM2 Power Select: J3
J3 is a VCC selector jumper to determine the input voltage for COM2
connector.
Setting
Setting
Setting
Setting
1
1
1
1
2
2
2
2
3
3
3
3
+5V
ON
ON
OFF
+12V
OFF
ON
ON
RS232/RS422/RS485 Select
This pin header allows you to select between RS232, RS422 or RS485
mode for COM1 port.
Pin
Pin
Pin
Pin
Signal
Signal
Signal
Signal
Pin
Pin
Pin
Pin
Signal
Signal
Signal
Signal
1
RXD_1
2
RXD_232-1
3
RXD_1
4
RXD_422-1
5
RXD_1
6
RXD_485-1
7
IC_DCD1
8
IC_RXD1
9
COM_DCD1
10
COM_RXD1
11
1-RS485-
RS422_-TX
12
1-RS485-
RS422_TX
13
IC_TXD1
14
IC_DTR1
15
COM_TXD1
16
COM_DTR1
17
1-RS422_RX
18
1-RS422_-RX
Jumper Settings
Jumper Settings
Jumper Settings
Jumper Settings
RS232
RS422
RS485
2
2
2
2
1
1
1
18
8
8
8
1
1
1
17
7
7
7
1
1
1
1
+12V
+12V
+12V
+12V
+5V
+5V
+5V
+5V
1
1
1
1
2
2
2
2
3
3
3
3
1
1
1
1 2
2
2
2
3
3
3
3
1
1
1
1
Summary of Contents for epia-n700
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