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MDI (straight-through cable)
MDI-X (Cross over cable)
MDI/MDI-X auto connection makes switch easy to use for
customers without considering the type of network cable.
Serial port connection
NP302T series adopts RJ45 connector. The PIN define is as
follows:
RS-232 port:
1
8
PIN
PIN define
Description
1
TXD
Transmit data
2
RXD
Received Data
3
RTS
Request to send
4
CTS
Clear to send
5
DSR
Data set ready
6
GND
Signal ground
7
DTR
Data terminal ready
8
DCD
Data carrier detect
RS-485/422 port:
Serial port
PIN
RS-485 PIN define
1
--
2
--
COM2
3
GND
4
D-
5
D+
6
--
7
--
COM1
8
GND
9
D-
10
D+
【LED Indicator】
LED indictor light on the front panel of product, the function
of each LED is described in the table as below.
System statue LED
LED
Indicate
Description
Power is connected/Function
ON
natural
PWR
Power is disconnected or function
OFF
nu-natural
ON
Ethernet port connect successfully
Ethernet port has data
Flashing
LINK
transmission
Ethernet port connect
OFF
unsuccessfully
OFF
None data receive
RX1~2
Flashing
In receiving data
OFF
None data transmit
TX1~2
Flashing
In transmitting data
【Installation】
Before installation, confirm that the work environment meet
the installation require, including the power needs and
abundant space. Whether it is close to the connection
equipment and other equipments are prepared or not.
RS-422 PIN define
1. Avoid in the sunshine, keep away from the heat
R-
fountainhead or the area where in intense EMI.
R+
2. Examine the cables and plugs that installation
GND
requirements.
T-
3. Examine whether the cables be seemly or not (less than
T+
100m) according to reasonable scheme.
R-
4. Power: 9~48VDC power input
R+
5. Environment: working temperature -40～75℃
GND
T-
T+
DIN-Rail mounting
Product support wall or rail mounted, DIN rail accessories
can purchase in the purchase of the product.
Wiring Requirements
Cable laying need to meet the following requirements,
1. It is needed to check whether the type, quantity and
specification of cable match the requirement before
cable laying;
2. It is needed to check the cable is damaged or not,
Storage Temperature: -40～85℃
Relative humidity 5%～95%
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