Ams trex™ Device Communicator

Related information
Set the suspend timer
Set the backlight timer
To conserve power, set the backlight timer to automatically dim the backlight after a
specified period of inactivity.
The timer is enabled only when the AC adapter is not connected to the Trex unit.
Procedure
1. Tap 
Settings
or the status bar at the top of the screen.
2. Tap 
More
→
Power Management
→
Dim display after
.
3. Select the number of minutes.
The default is 5 minutes.
4. Tap 
OK
.
Set the suspend timer
To conserve power, set the suspend timer to automatically enter suspend mode after a
period of inactivity, such as no key presses. Suspend is similar to the standby mode on a
phone. The Trex unit shuts down if there is no activity (key presses) after a specified
amount of time. Use the shut down timer to specify this time.
The timer is enabled only when the AC adapter is not connected to the Trex unit.
Procedure
1. Tap 
Settings
or the status bar at the top of the screen.
2. Tap 
More
→
Power Management
→
Suspend after
.
3. Select the number of minutes.
The default is set to Never.
4. Tap 
OK
.
Set the shut down timer
To conserve power, set the shut down timer to automatically shut down the Trex unit after
a period of inactivity, such as no key presses or taps on the screen.
The timer is enabled only when the AC adapter is not connected to the Trex unit.
Procedure
1. Tap 
Settings
or the status bar at the top of the screen.
2. Tap 
More
→
Power Management
→
Turn off after
.
3. Select the number of minutes.
The default value is set to 30 minutes.
User Guide 
AMS Trex Device Communicator overview
September 2021
User Guide 
37

---

4. Tap 
OK
.
2.10.13
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
.
2.10.14
Enable Diagnostic Logging