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Troubleshooting
This appendix provides instructions for troubleshooting the NI CVS-1459RT.
Software Configuration Problems
The NI CVS-1459RT Does Not Appear in MAX or in
Vision Builder AI
Possible causes and solutions:
•
The NI CVS-1459RT may not be powered. Verify that there is system power to the device
and that both the NI CVS-1459RT and the development computer are properly connected
to the network. The PWR/FAULT
LED should be lit green and the ACTIVITY/LINK LED
on the primary network port should flash green when refreshing the list of devices in MAX
or Vision Builder AI.
•
The NI CVS-1459RT may have been configured on another network and then moved to the
current network. Reconfigure the NI CVS-1459RT device for the current network.
Note
Connect a monitor and keyboard to the NI CVS-1459RT and press <Enter>
to view the current configuration settings of the device.
•
Another device on the network is using the IP address assigned to the NI CVS-1459RT.
This can happen when you assign the same static IP to two devices, you assign a static IP
that is in the range of the IP address available for DHCP use on your network, or the DHCP
server assigns the same IP address to another device. Either remove or reconfigure the other
device, or reconfigure the NI CVS-1459RT to use a different IP address by putting it into
the IP RESET state and restarting into the normal state.
•
The cable you are using may be inappropriate for the speed of your network, causing
network communication dropout. While 1,000 Mbps communication over short cables
lengths can be achieved with the CAT5 cable commonly used for 10 and 100 Mbps, CAT5e
and CAT6 cables are more reliable and recommended for 1,000 Mbps links. The
NI CVS-1459RT has the ability to perform auto-crossover, allowing the use of straight or
crossover Ethernet cables, independent of the connection configuration.
•
The NI CVS-1459RT is configured to acquire an IP address from a DHCP server, but no
DHCP server is available. By default, the target will automatically attempt to connect to the
network using DHCP. If the target is unable to initiate a DHCP connection, the target
connects to the network with a link-local IP address (
169.254.x.x
).