National Instruments ENET-232 Series, Manual

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serial ENET Interface typically is ready to operate about 15
seconds after you power it on. Follow the instructions in
Adding a Serial ENET Interface to add the serial ports to
your computer.
If the
PWR/RDY LED continues to alternate rapidly
between red and yellow, the unit could not use DHCP to
configure its network parameters. Follow the instructions in
Adding a Serial ENET Interface to configure the unit
properly and add the serial ports to your computer.
If the
PWR/RDY LED is steady red, the serial ENET has an
unrecoverable error. Contact National Instruments
Technical Support.
If the
PWR/RDY LED blinks a slow red/yellow pattern, the
serial ENET did not pass its self tests. Refer to ENET
PWR/RDY LED Signaling to interpret the flash pattern
before calling National Instruments Technical Support.
Note If at any time you want to return the serial ENET
interface to its default configuration state as given on the
baseplate identification label, press and hold the CFG
RESET switch for three seconds at power-on. This switch
is on the rear panel, as shown in the figure above. Refer to
Using the CFG RESET Switch for more information.