Emerson AMS Trex Device Communicator User Manual page 38

AMS Trex Device Communicator overview
September 2021
2.10.13
2.10.14
2.11
38
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4. Tap OK.
Enable or disable automatically connecting to HART
devices
If this option is enabled, the Field Communicator application searches for and
automatically connects to an externally-powered HART device at address zero and displays
its device menu. This makes the connection process faster. If this option is disabled, the
Field Communicator application polls addresses zero and 63 and displays the Device List,
so you can select a device from the list or change polling options from the My Device Not
Found button.
You may want to disable this option in the following situations:
• The Trex unit is connected to a multi-drop HART loop, and you want to configure a
device at another address.
• The Trex unit is connected to a transmitter at address zero with a THUM adapter.
Otherwise, the Trex unit may automatically connect to the transmitter at address zero,
and would not allow you to connect to the THUM adapter.
• You want to configure multiple THUM adapters and do not want to adjust the polling
option.
Procedure
1. Tap Settings or the status bar at the top of the screen.
2. Tap More → Field Communicator App Settings.
3. Tap Auto-Connect to enable or disable the option.
4. Tap OK.
Enable Diagnostic Logging
Procedure
Note
You should only enable Diagnostic Logging when directed by Emerson service personnel.
From Settings → Field Communicator App Settings tap Diagnostic Logging to ON.
Applications on the Trex unit
The Home screen displays all the applications installed on the Trex unit. Open applications
by tapping the icon on the Home screen.
Field Communicator, Settings, and Trex Help applications do not require activation to
work. Other applications on the Trex unit may be disabled until you activate the Trex unit.
You can use Upgrade Studio to activate the Trex unit. Other applications may be disabled
because you did not purchase a license for the functionality, or the Trex unit does not have
the required communication module.
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