Appendix C
Troubleshooting and Common Questions
©
National Instruments Corporation
C-3
ENET-232 and ENET-485 Series User Manual
where
IPaddress
is the IP address you want to look up.
Alternatively, to determine the IP address associated with a particular
hostname, type in the following command instead:
nslookup
hostname
If you still cannot communicate with your device, contact National
Instruments.
Cannot Communicate with Devices Located on Other Subnets
•
Verify that the device is present on the network by pinging the IP
address of your device. Find the directory where
ping
is installed and
type in the following command:
ping
IPaddress
where
IPaddress
is the IP address assigned to your serial device
server.
•
Confirm that the gateway settings of the device are set properly. To do
this, run NI Ethernet device configuration on a computer on the same
subnet as the device.
•
Confirm that the gateway settings of the host machine are set properly.
(Windows 2000/NT 4.0 only)
To view your network settings, find the
directory where
ipconfig
is installed and run it.
If you need more information, you can run
ipconfig
with the
/all
option by typing
ipconfig /all
. This shows you all settings for the
Windows 2000/NT machine. Be sure to use the settings for the
Ethernet adapter you are using to communicate with the serial device
server.
(Linux x86/Solaris 2.x only)
To view your network settings, find the
directory where
ifconfig
is installed and run it; you may need to use
-a
as a flag. Be sure to use the settings for the Ethernet adapter you are
using to communicate with the serial device server.
Troubleshooting Hardware Problems
Unit Does Not Power On
Verify that the external power supply is securely fastened to the device and
the power supply is plugged into an outlet of proper voltage and the power
switch is in the ON position.