7
NePort Series include –POE,-L,-R,-EN versions, this doc just descript the standard version of
neport.
NePort series with 8 pins
Chart2-1. Valid for NePort-L 、NePort-R and the other versions with 8 pins
Mark:
1. Place a 10uF capacitor between power and ground, and had better be close to NePort.
2. Should not connect upload resistance on Reset pin( Pin 3 ).
3. Recommend to connect upload resistance on RTS and CTS pin when uart work under
rs232 mode
4. Recommend to connect download resistance on RTS and CTS pin when uart work under
rs485/422 mode
PinNum Pin Name
Type
Description
1
GND
Power
Ground
2
VDD
Power
Power Input (+3.3V )
3
RESET
Input
Low level to reset (5V tolerant)
4
TXD
Output Serial port: Data Output(5V tolerant)
5
RXD
Input
Serial port: Data Input(5V tolerant)
6
IO/RTS
I/O
Programmable I/O with multiplex Function:(5V tolerant)
1.RTS(Request to Send): Output, Hardware Flow Control
2.IO(input/output): Can be configured by web or device
manager ( Only for special models)
3.TCP Connection Status，Invalid when hardware flow
control is enabled
4. System status ,Invalid when hardware flow control is
enabled
5. RS-485/RS422 Controller
(RS422: Low level)
7
Default
Input
Low level valid,Force to load factory setting(5V
tolerant
)
Keep this pin be low level for more than 5
seconds,NePort will be forced to load the factory
setting and automatically reboot system
8
IO/CTS
I/O
Programmable I/O with multiplex Function:(5V tolerant)
1.RTS(Request to Send): InPut, Hardware Flow Control
2.IO(input/output): Can be configured by web or device
manager ( Only for special models)
3.TCP Connection Status，Invalid when hardware flow
control is enabled
4. System status ,Invalid when hardware flow control is
enabled
5. RS-422 Controller: High Level
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