Ams trex™ Device Communicator

3.1
Open or close the Field Communicator
application
Procedure
1. To open the application, tap the 
Field Communicator
icon on the Trex 
Home
screen.
The 
Auto-Detect
screen is displayed while the Field Communicator application tries
to detect a connected device. If you tap 
Cancel
on the 
Auto-Detect
screen, the Field
Communicator application stops checking for devices and displays the 
Connect -
Select
screen.
2. To close the application, tap 
Exit
if the Connect - Select screen is displayed.
Otherwise, tap 
Back
until that screen is displayed.
User Guide 
Field Communicator application
September 2021
User Guide 
53

---

3.2
Device interoperability
The Trex unit communicates with many HART and FOUNDATION fieldbus devices
independent of device manufacturer by using Electronic Device Description Language
(EDDL) technology.
Basic testing is performed on all device descriptions. New device descriptions are available
from the Upgrade Studio application or the resource DVD.
3.3
Forward Compatibility rules for saving and
sending configurations to AMS Trex
Note
Do not edit configurations on the AMS Trex unit while connected to Configuration
Management.
You can edit offline configurations on the Trex unit according to forward compatibility
rules:
•
To edit a configuration with Trex, you must have the proper device description installed
on Trex. The installed device description must match the device type and device
revision of the configuration. If the configuration does not exactly match the device
description on the Trex unit, you cannot save the configuration.
•
To send a configuration to a device, you must have the proper device description
installed on Trex. The installed device description must be for the same device type,
and equal to or greater than the device rev of the configuration.
•
You cannot save or send configurations when using the generic device description.