Emerson AMS Trex Device Communicator User Manual page 70

Field Communicator application
September 2021
3.10.2
70
1.800.561.8187
Figure 3-10: HART communication terminals on the Device Communicator Plus
communication module
A. Power and communicate with a HART device.
B. Communicate with an externally-powered HART device.
Related information
Wiring diagrams for HART devices and the Field Communicator application
Power and connect to a HART device
Wiring diagrams for HART devices and the Field
Communicator application
The Trex unit can communicate with a device from the control room, on the bench, or any
wiring termination point in the loop. Connect the lead set to the Trex unit and to the
communication terminals on the device or across the resistor.
Below each diagram, a table lists the expected prompts from the device connection wizard
and the answers to complete the connection. The prompts appear only if the Field
Communicator application could not automatically detect or connect to the device.
Note
The Trex unit acts as a secondary HART master on a HART loop.
CAUTION
Remove the USB cable from the Trex unit before connecting to a device.
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