Ams trex™ Device Communicator

Option
Description
Target Update Rate
The number of seconds in between each set of
measurements. The default setting is to take a set of
measurements every 10 seconds.
If the Fieldbus Diagnostics application detects a device
was added/removed from the device list or it detects a
bad DC voltage, the application captures an extra DC
voltage measurement in the log file to show the DC
voltage dropping.
Note
The actual update rate may be affected by conditions
on the fieldbus network. For example, if the fieldbus
network has a lot of scheduled activity, the rotation of
the network token will be slow, and the Trex unit will to
wait longer to measure each device's signal.
Max Log Entries
The maximum number of measurement sets collected
in one session and saved to the log file. A DC voltage, a
noise, and signal measurement are one measurement
set. These entries appear as a row in the .csv log file.
Note
If the maximum number of entries is reached, the
Fieldbus Diagnostics application stops saving data to
the log file. You can continue to append log entries to
an existing log file, until the log file reaches the
maximum file size.
The Fieldbus Diagnostics application begins saving the measurements.
5.13.3
Save measurements to an existing log file
You can save measurements to an existing file on the Trex unit to create a trend/report of
the fieldbus segment.
Note
The Fieldbus Diagnostics application does not let you browse to an existing log file saved
on the Trex unit. You need to enter the file name.
Procedure
1. On the Fieldbus Diagnostics Overview screen, tap 
Logging
.
The Log Settings screen lists the current file name that is being used.
2. Check the name listed in the File Name field. If it is the desired file, tap 
OK
.
3. If the desired file name is not listed, do the following:
a) Tap 
File Name
on the 
Log Settings
screen.
b) Tap 
File Name
.
c) Enter the desired file name, and tap 
OK
.
d) Tap 
OK
.
User Guide 
Fieldbus Diagnostics application
September 2021
User Guide 
173

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4. Ensure 
Append
is selected for the 
Save Option
.
5. Tap 
OK
.
5.13.4
Transfer a Fieldbus Diagnostics log file from the Trex
unit to a PC
The Trex File Transfer Utility saves files to a default location on your PC. The utility can
transfer one or more files. After the files are transferred to the PC, the files are removed
from the Trex unit.
Procedure
1. Close the Fieldbus Diagnostics application on the Trex unit.
2. Connect the Trex unit to the PC where the Trex File Transfer Utility is installed using
a USB cable.
3. Open the Trex File Transfer Utility.
The application connects to the Trex unit. The connected Trex unit is listed by its
default name.
4. Next to 
Fieldbus Diagnostics Dataset
, click 
Transfer
.
The Trex File Transfer Utility creates the folder, if necessary, to save the files and
then transfers the files from the Trex unit to the PC. The Fieldbus Diagnostics file is
removed from the Trex unit.
5. Click 
OK
.
6. Click the file directory next to 
Destination
to open the folder and access the
transferred files.
7. To disconnect the Trex unit, remove the USB cable.