Troubleshooting does not respond for a long time. The device server may not have
a network connection. Make sure that the Link LED is lit.
If the Link LED is not lit, then the
device server does not have a
network connection.
The device server is not
communicating with the serial
device it is attached to.
The most likely reason is the
wrong serial settings were
chosen.
The serial settings for the serial
device and the device server must
match. The default serial settings
for the device server are RS-232,
9600 baud, 8 character bits, no
parity, 1 stop bit, no flow control.
For NET485, you must change the
setting to RS422 or RS485.
When you try to enter the setup
mode on the device server via
the serial port, you get no
response.
Setup Mode via the serial port is
NOT supported on the NET485 Setup Mode via the serial port is NOT
supported on the NET485. The unit is
able to receive data but it cannot
transmit, since the TXEN enable pin
is not accessible to the boot firmware.
You can ping the device server,
but not Telnet to the device
server on port 9999.
There may be an IP address
conflict on your network
The Telnet configuration port
Turn the device server off and
then issue the following
commands at the DOS prompt of
your computer:
(9999) is disabled within the device
server security settings. ARP -D X.X.X.X (X.X.X.X is the IP of
the device server).
PING X.X.X.X (X.X.X.X is the IP of
the device server).
If you get a response, then there is a
duplicate IP address on the network.
If you do not get a response, use the
serial port to verify that Telnet is not
disabled.