12
Major Operating Controls and Their Functions
LINK RCV SNDOPERATE
Network Interface Unit WJ-NT304
WJ-NT304

w

q

Front cover
e

u

y

r t

qOperation Indicator (OPERATE)
This LED will light when the power is on.
Important:
• The LED will blink for around 2 minutes until the unit
becomes ready to operate.
• When the temperature is below 0 °C, it may take
time until the unit becomes ready to operate.
wStatus indicators
Link (LINK): This LED will light when accessing to a
network.
Receive (RCV): This LED will light when receiving data
through this port.
Send (SND): This LED will light when sending data
through this port.
eReset button (RESET)
This button is pressed to reset the unit.
rDip switch
Normally, do not touch. (Reserved for service person-
nel)
Remain all the switches to OFF. (Refer to the illustra-
tion.)
tSD memory card slot
An SD memory card (option) is inserted into this slot.
Refer to p. 16 for how to insert the SD memory card.
ySD memory card error indicator
This LED will light when it is impossible to write data on
the SD memory card.
uSerial port (SERIAL)
Normally, do not touch. (Reserved for service person-
nel) Do not connect anything.

■Front view

ON
OFF