Emerson AMS Trex Device Communicator User Manual page 154

Fieldbus Diagnostics application
September 2021
154
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Figure 5-2: Fieldbus Diagnostics Overview screen while taking measurements
A. View the status of the DC voltage measurement.
B. View the status of the noise measurements.
C. View a spectrum of the low-frequency, in-band, and high-frequency noise
measurements.
D. Set options for displaying and collecting the measurements.
E. View the values for each measurement.
F. Enable or disable saving the measurements to a log file (.csv,), and set the logging
settings. Multiple sets of measurements can be saved to create a trend/report.
G. Enable or disable power to a FOUNDATION fieldbus device. The Trex unit needs the
Device Communicator Plus communication module and the FOUNDATION fieldbus
Power Plug to power a fieldbus device.
H. View the status of the fieldbus signal measurement.
I. Tap Go Online or Go Offline to have the Trex unit go online or offline. When the Trex
unit is on an externally-powered fieldbus segment with fieldbus communications, Go
Online queries devices for their tags. The option also adds the Trex unit to the device list
on the Details screen, so you can compare the Trex unit's known good signal to a device's
signal. When the Trex unit is powering a device or when there is no fieldbus
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