Table of Contents
Troubleshooting
May 2019
E.3
THUM
Check the following to find out possible problems with the THUM Adapter.
Table E-3: Troubleshooting the THUM Adapter
Symptom
Wired device does not turn on
when THUM Adapter is added to
loop
Can not communicate with wired
device or THUM Adapter
THUM Adapter not joining
network
Limited Bandwidth Error
Tank measurement variables are
not presented for some tanks
For more information see the Emerson 775 Wireless THUM Adapter Reference Manual
(Document No. 00809-0100-4075).
108
™
Adapter
Action
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Check the wiring and connections between THUM Adapter
and wired device
Verify that enough voltage is being supplied to power both
the THUM Adapter and wired device
Verify that wiring is correct
Verify that enough voltage is being supplied to power both
THUM Adapter and wired device
Verify that correct resistance of 220 Ohm is installed. See
Wiring.
Verify network ID and join key
Wait longer (30 min.)
Verify THUM Adapter is within range of at least one other
device
Verify network is in active network advertise
Power Cycle device to try again
Reduce the Update Rate on THUM Adapter and wired
device
Increase communication paths by adding more wireless
points
Check that THUM Adapter has been online for at least an
hour
Check that THUM Adapter is not routing through a
"limited" routing node
Create a new network with an additional Emerson Wireless
Gateway
Check the THUM configuration. Ensure that the correct
sub-device setting is used. See
Reference Manual
00809-0100-5200
Connected
Sub-device.
Reference Manual
- Quick Links:
- The Wireless Tank Gauging System
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