Troubleshooting; Table 17 - Problems And Error Messages - GridConnect NET232 User Manual

5. Troubleshooting

This chapter discusses how you can diagnose and fix errors quickly without having to contact tech support.
It helps to connect a terminal to the serial port while diagnosing an error to view summary messages that
may be displayed. When troubleshooting, always ensure that the physical connections (power cable,
network cable, and serial cable) are secure.
Note: Some unexplained errors might be caused by duplicate IP addresses on the network. Make sure that your unit's
IP address is unique.
When troubleshooting the following problems, make sure that the NET232/USB is powered up. Confirm
that you are using a good network connection. See
description of the LEDs.
Note: For more information about the ARP commands, see the Technical Notes manual, GC-800-239.

Table 17 - Problems and Error Messages

Problem/Message
When you issue the ARP –S
command in Windows, "The
ARP entry addition failed: 5"
message displays.
When you attempted to assign
an IP address to the unit via the
ARP method, the "Press Enter
to go into Setup Mode" error
(described below) displayed.
Now when you Telnet to the
Server, the connection fails.
When you Telnet to port 9999,
the message "Press Enter to go
into Setup Mode" displays.
However, nothing happens
when you press Enter, or your
connection is closed.
When you Telnet to port 1 to
assign an IP address to the
device server, the Telnet
window does not respond for a
long time.
NET232/NETUSB User Guide
Table 3 - NET232 LED Functions
Reason
Your currently logged-in user
does not have the correct rights
to use this command on this PC.
When you Telnet into port 1 on
the server, you are only
assigning a temporary IP
address. When you Telnet into
port 9999 and do not press Enter
quickly, the server will reboot,
causing it to lose the IP address.
You did not press Enter quickly
enough. You only have 5
seconds to press Enter before
the connection is closed.
You may have entered the
Ethernet address incorrectly with
the ARP command.
The IP address you are trying to
assign is not on your logical
subnet.
The server may not be plugged
into the network properly.
Solution
Have someone from your IT
department log you in with
sufficient rights.
Telnet back into Port 1. Wait for it
to fail, then Telnet to port 9999
again. Make sure you press Enter
quickly.
Telnet to port 9999 again, but
press Enter as soon as you see
the message "Press Enter to go
into Setup Mode."
Confirm that the Ethernet address
that you entered with the ARP
command is correct. The Ethernet
address may only include
numbers 0-9 and letters A-F. In
Windows and usually in Unix, the
segments of the Ethernet address
are separated by dashes. In some
forms of Unix, the Ethernet
address is segmented with
colons.
Confirm that your PC has an IP
address and that it is in the same
logical subnet that you are trying
to assign to the server.
Make sure that the Link LED is lit.
If the Link LED is not lit, then the
server is not properly plugged into
the network.
Troubleshooting
on page for a
2-7
5-1