MDI/MDI-X auto connection makes switch easy to use for
customers without considering the type of network cable.
Serial port connection
NP308T-8D(RS-232) adopts RJ45 connector. The PIN
define is as follows:
RS-232 port:
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
NP308T-8DI(RS-485)
back panel provide 3.81mm 4bit industrial
terminal block, the PIN define is as follows:
RS-485/422 port:
Serial port
PIN
RS-485 PIN
define
RS-422 PIN
define
COM1~COM8
1
D+(A)
T+(A)
2
D-(B)
T-(B)
3
--
R+(A)
4
--
R-(B)
【
LED Indicator
】
The LED indicator on the front panel of serial device server
can indicate the running system and the operation status, which
makes it easy to find and solve problems, the specific meaning of
indicator are shown in the table.
System statue LED
LED
Indicate
Description
PWR
ON
Power is connected/Function natural
OFF
Power is disconnected or function
nu-natural
LINK
ON
Ethernet port connect successfully
Flashing Ethernet port has data transmission
OFF
Ethernet port connect unsuccessfully
RUN
ON
System did not run or running
un-steadily
Flashing System Running steadily
OFF
System Running un-steadily
RX1~RX8
OFF
None data receive
Flashing In receiving data
TX1~TX8
OFF
None data transmit
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.
1. Avoid in the sunshine, keep away from the heat fountainhead or
the area where in intense EMI.
2. Examine the cables and plugs that installation requirements.
3. Examine whether the cables be seemly or not (less than 100m)
according to reasonable scheme.
4. Power: 9~48VDC power input
5. Environment
：
working temperature -40
～
75
℃
Storage Temperature: -40
～
85
℃
Relative humidity 5%
～
95%
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;
1
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