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Serial port connection
NP308T-8D(RS-232) 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
NP308T-8DI(RS-485) back panel provide 3.81mm 4bit industrial
terminal block, the PIN define is as follows:
RS-485/422 port:
RS-485 PIN
Serial port
PIN
define
1
D+(A)
2
D-(B)
COM1~COM8
3
--
4
--
【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.
LED
PWR
LINK
RUN
RX1~RX8
TX1~TX8
【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
1. Avoid in the sunshine, keep away from the heat fountainhead or
define
the area where in intense EMI.
T+(A)
2. Examine the cables and plugs that installation requirements.
T-(B)
3. Examine whether the cables be seemly or not (less than 100m)
R+(A)
according to reasonable scheme.
R-(B)
4. Power: 9~48VDC power input
System statue LED
Indicate
Description
ON
Power is connected/Function natural
Power is disconnected or function
OFF
nu-natural
ON
Ethernet port connect successfully
Flashing
Ethernet port has data transmission
OFF
Ethernet port connect unsuccessfully
System did not run or running
ON
un-steadily
Flashing
System Running steadily
OFF
System Running un-steadily
OFF
None data receive
Flashing
In receiving data
OFF
None data transmit
Flashing
In transmitting data
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;
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