Measurement Computing WEB-TEMP - Manual (Page 25)

25
Chapter 5
Ethernet Troubleshooting
There are typically only two reasons why you would be unable to communicate with the WEB-TEMP and
access the web interface:
 The WEB-TEMP is configured incorrectly, or is operating incorrectly.
 The network is configured incorrectly. Though the WEB-TEMP is functioning normally, you are unable to
communicate with it over the network.
Though a detailed treatment of debugging the network is beyond the scope of this manual, there are a few things
to try to determine if the problem experienced is a problem with the WEB-TEMP or with the network
configuration.
Perform the procedures below to verify the physical and network connections.
Contact your network administrator for issues with your network configuration
Measurement Computing provides technical support for WEB-TEMP connectivity and operation only. For
networking issues, contact your network administrator or computer professional.
Check the WEB-TEMP status LEDs
1. Verify the external power connection. When external power is supplied to the WEB-TEMP, the
POWER/COMM LED illuminates steady green.
o If the POWER/COMM LED is off, check the power cable and the socket that the cable is plugged into.
If the cable is good, plugged in, and the power to the socket is on, then the WEB-TEMP is not
powering up correctly. Contact MCC technical support. Refer to
Getting help on page 28 for contact
information.
2. Verify the Ethernet connection. The LINK/ACTIVITY LED illuminates steady green when the WEB-TEMP
is connected to an active Ethernet hub or switch.
o If the LINK/ACTIVITY LED is off, verify that the Ethernet cable is the correct type, that it is not
damaged , and that it is connected correctly between the WEB-TEMP and a known functional
server/hub/switch (or connected to your computer if you are connected directly).
o If the Ethernet cable is plugged into a wall socket, check with your Network Administrator or
computer professional that the wall socket is active, and that it is connected to an active Ethernet hub
or switch.
If you are properly connected to an active server/hub/switch and the LED is still off, there is a problem
with the WEB-TEMP. Contact MCC technical support. Refer to
Getting help on page 28 for contact
information.
3. Verify the network connection:
When the WEB-TEMP is connected to a network, the LINK/ACTIVITY LED flashes when there is activity
on the network.
o If the
LINK/ACTIVITY LED is solid green, your network’s traffic is at its maximum limit and no
communication is possible, or the network traffic is idle. Check with your network administrator.
o If the LINK/ACTIVITY LED is not illuminated, there are two possibilities:
You are not connected to the network, even though the WEB-TEMP is connected to an active
server/hub/switch. An average network has at least some traffic that causes the LED to blink. Perform
the procedure listed in
Checking your TCP/IP settings on page 26.
The WEB-TEMP is not receiving data, and the network connection is verified by a network
administrator. Contact MCC technical support. Refer to
Getting help on page 28 for contact
information.
When the WEB-TEMP is directly connected to a computer via a crossover cable or a single hub/switch, the
LINK/ACTIVITY LED flashes when data is transmitted or received over the Ethernet connection.