Emerson AMS Trex Device Communicator User Manual page 71

User Guide
User Guide
1.800.561.8187
Figure 3-11: Power and connect to a 2-wire HART transmitter
Note
When the Trex unit powers the HART transmitter, an external resistor is not needed. The
Trex unit uses an internal resistor that is automatically used when you enable the Trex unit
to power the transmitter.
Note
Do not insert a resistor in parallel with either the HART+pwr or HART terminals on the Trex
unit, or in parallel with the device's communication terminals. This may prevent
communications.
Device connection wizard prompts
Do you intend to provide power from the Trex unit?
Are you providing power to a transmitter or positioner?
Change Polling Option?
www.
Field Communicator application
Answer
Yes
Transmitter
Tap Yes if the device is not at address
zero.
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September 2021
71