Ams trex™ Device Communicator

Symptom
Possible causes
Solution
The Trex unit does not remain
the LAS on a fieldbus segment.
A host takes over as the LAS.
When a host is established on a
fieldbus segment, it will take
over as the LAS. No action is
required.
Troubleshooting
User Guide
September 2021
182
User Guide

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B
Technical specifications
This chapter lists the specifications for the hardware and the AC adapter.
B.1
Physical specifications
Specification
Value
Weight
Approximately 1330 grams
Height x width
7.75" x 5.5" inches
Display
5.7 inch color VGA resistive touchscreen
640 x 480 pixel
Buttons (front of the Trex
unit)
X button - similar to a Back key
4 arrow buttons to navigate menus
Checkmark - similar to an Enter key
USB
Micro USB connector. USB 2.0
Remove the USB cable from the Trex unit before connecting to a
device.
B.2
Communication module specifications
Device Communicator communication module
Terminal
Overview
HART terminals
The terminals enable HART communication with the Trex
unit.
Connectors: Two banana jack plugs.
Internal fuse rating: 50 mA
Fieldbus (FF) terminals
The terminals enable FOUNDATION fieldbus
communication with the Trex unit.
Connectors: Two banana jack plugs.
User Guide 
Technical specifications
September 2021
User Guide 
183

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Device Communicator Plus communication module
Terminal
Overview
HART terminals
The terminals enable HART communication with the Trex
unit.
Connectors: Two banana jack plugs.
Voltage measurement accuracy: +/- 2% of reading for
measurements greater than 3 volts
Internal fuse rating: 50 mA.