Emerson AMS Trex Device Communicator User Manual page 60

Field Communicator application
September 2021
3.8
60
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Power Status Message
Voltage on Multiple
Communication Status
No Communication
Fieldbus Detected
HART Detected
Online menu or Device Dashboard
Depending on the device description (DD) for a device, the first online screen is an Online
menu or a device dashboard menu. All devices show a Menu tab at the bottom of the
screen.
Online menu
An Online menu may display the following options, depending on the device type:
• Device setup
• Primary variable (PV)
Analog output (AO)
•
• PV lower range value (LRV)
• PV upper range value (URV)
www.
Description
The Trex unit has detected voltage on more than one terminal.
This may be due to the following:
• The AC adapter is attached to the Trex unit and is charging
the power module. Disconnect the AC adapter from the Trex
unit.
• Noise is detected on the network.
• Two lead sets are connected to two different fieldbus
segments or loops. This is not recommended.
Description
The Trex unit has not detected any HART or fieldbus
communication.
The Trex unit has detected FOUNDATION fieldbus
communication.
Typical status when the Trex unit detects:
• A HART device in burst mode.
• Active HART communication from the digital control system.
• A response to a polling message sent to the device.
This status may be sporadic and may alternate between HART
Detected and No Communication.
If unexpected communications are detected, remove the AC
adapter to isolate the Trex unit from noise.
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