Emerson Rosemount 775THUM Reference Manual page 46

Troubleshooting
January 2023
Table 6-1: Troubleshooting Recommended Actions
Symptom
Can not communicate with
wired device or THUM Adapter
Can not communicate with
THUM Adapter
Configuration troubleshooting
Can not configure THUM
Adapter with Field
Communicator or AMS Device
Manager
THUM Adapter does not
communicate with wired device
Duplicate HART Master
Detected
Wireless network troubleshooting
46
(continued)
Recommended action
• Verify that wiring is correct
• Verify that enough voltage is being supplied to power both
THUM Adapter and wired device
• Verify that between 250 and 1100 Ohms resistance is present
• Verify that wiring is correct
• Verify that enough voltage is being supplied to power both
THUM Adapter and wired device
• Verify that between 250 and 1100 Ohms resistance is present
• Verify that Field communicator or AMS Device Manager is set
to poll for THUM Adapter address Power Cycle device to try
again
Make sure that the correct DD is loaded into the Field
Communicator or AMS Device Manager
1. Run the Configure Discovery Mode method to connect the
THUM Adapter to wired device
2. Check the wiring and connections between THUM Adapter
and wired device
3. Verify that between 250 and 1100 Ohms resistance is present
for HART Communications
4. Verify that the wired device is functioning properly Power
Cycle device to try again
1. Verify that two primary masters are on the loop.
2. Then set the THUM Adapter into secondary master mode.
3. Power Cycle device to try again.
4. If THUM Adapter is in secondary master mode and Field
Communicator or AMS Device Manager is connected to loop
this error will occur.
5. The error will disappear after the Field Communicator or AMS
Device Manager is removed from the loop.
Reference Manual
00809-0100-4075
Emerson.com/Rosemount