16
(2) COM1/COM2: Serial Port Connector
Port
NF694 Series
NF694L Series
COM1
RS232/422/485 RS232
COM2
RS232
RS232
COM1 port from NF694 series can function as RS232/422/485 port. In normal settings
COM1 functions as RS232 port. With compatible COM cable COM1 can function as
RS422 or RS 485 port. User also needs to go to BIOS to set ‘Transmission Mode
Select’ for COM1 at first, before using specialized cable to connect different pins of
this port.
For RS422 Mode
RS422
T
X-
(B)
(A
)
(A
)
RS422RX-
(B)
(B)
For RS485 Mode
RS485
D
-(
B)
R
S485 D+(A)
*Note:For NF694 series COM1 supports RS232/422/485 function;COM2 port only supports as RS232
funtion.For NF694L series both COM1 & COM2 function as RS232 serial port only.
(3) ATXPWR1 (24-pin block): Power Connector
PIN RO W1
RO W2
1
+3.3V
+3.3V
2
+3.3V
-12V
3
GND
GND
4
+5V
Soft Power on
5
GND
GND
6
+5V
GND
7
GND
GND
8
Power OK
-5V
9
+5V Stand by +5V
10
+12V
+5V
11
+12V
+5V
12
+3.3V
GND
24-pin Main Power Connector
