National Instruments ENET-232 Series, Руководство пользователя

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Chapter 2 Installation
© National Instruments Corporation 2-5 ENET-232 and ENET-485 Series User Manual
• If the PWR/RDY LED continues to alternate rapidly between red and
yellow, the unit was unable to use DHCP to configure its network
parameters. If your network does not have DHCP, follow the
instructions in Chapter 3,
Ethernet Configuration , to give your unit
its network configuration. If this is successful, the PWR/RDY LED
should become steady yellow. Then you can follow the instructions
in Chapter 4,
Serial Port Configuration , to add the serial ports to
your computer. Refer to Appendix C, Troubleshooting and
Common Questions , if the LED does not change to steady yellow.
• If the PWR/RDY LED is steady red, the serial device server has an
unrecoverable error. Contact National Instruments Technical Support .
• If the PWR/RDY LED blinks a slow red/yellow pattern, the serial
device server did not pass its self tests. Refer to Appendix B,
PWR/RDY LED Signaling , to interpret the flash pattern before calling
National Instruments Technical Support.
You can skip Chapter 3, Ethernet Configuration , if your serial device server
can use DHCP. However, you must use NI Ethernet device configuration to
change the hostname from the default hostname listed on the baseplate
label.
Note If at any time you want to return the serial device server 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 Figure 2-2.
Refer to the
Using the CFG RESET Switch section in Chapter 6, Using Your Serial Device
Server , for more information.