Ams trex™ Device Communicator

3.5
Connect - Select screen
If the Trex unit cannot automatically detect or connect to the device when you open the
Field Communicator application, the 
Connect - Select
screen is displayed. The 
Connect -
Select 
screen is the home screen for the Field Communicator application.
You can do the following on the 
Connect - Select
screen:
User Guide 
Field Communicator application
September 2021
User Guide 
55

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•
Connect the lead set to the Trex unit and to the device to try to automatically detect/
connect to the device. If the device meets the criteria for automatically connecting, the
Trex unit tries to connect to the device.
•
Tap 
HART
or 
Fieldbus
to start the device connection wizard and connect to the device.
•
Tap 
HART Offline
or 
Fieldbus Offline
to simulate a device.
Figure 3-1: Connect - Select screen
Note
To switch between HART communication and FOUNDATION fieldbus communication, you
must exit and restart the Field Communicator application. After the HART or Fieldbus
Device Lists are displayed, the HART or Fieldbus buttons disappear until you restart the
application.
Option
Description
Power Status
Detect voltage on the lead set.
Field Communicator application
User Guide
September 2021
56
User Guide

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Option
Description
Communication Status
Detect if a connected device is communicating with the Trex
unit.
HART
Connect to a live HART device. Tap this option if the Trex unit
could not automatically detect or connect to the device. The
device connection wizard is displayed.
HART Offline
Simulate a connected HART device to become familiar with
the menus before configuring the device in a critical
environment. This option does not require communication
with a device.
Fieldbus
Connect to a live FOUNDATION fieldbus device. Tapping
Fieldbus
starts the Trex unit's communications if external
power is detected, and the Trex unit assumes the role of
network master (LAS), if no other master exists. The device
connection wizard is displayed. (The Fieldbus option is
displayed only if Trex unit is licensed for FOUNDATION
fieldbus.)
Fieldbus Offline
Simulate a connected FOUNDATION fieldbus device to
become familiar with the menus before configuring the
device in a critical environment. This option does not require
communication with a device. (The Fieldbus Offline option is
displayed only if Trex unit is licensed for FOUNDATION
fieldbus.)
To return to the 
Connect - Select 
screen from a device screen, press 
Menu
→
Disconnect
.