Ams trex™ Device Communicator

Viewing the saved measurements on a PC
To view the saved measurements, you need use the File Transfer Utility to transfer the log
file from the Trex unit to a PC. You cannot view the log files on the Trex unit. The File
Transfer Utility is included with the install of Upgrade Studio. (You can access the Upgrade
Studio installer on the resource DVD/media included with the Trex unit.)
5.13.2
Enable or disable logging
Use the logging option to save measurements to a comma-separated values (.csv) log file.
You can save one set of measurements or append additional sets of measurements that
you collect at a later date. Appending the measurements lets you create a trend/report of
the fieldbus segment.
The log file will continue to save measurements until:
•
You disable the logging option.
User Guide 
Fieldbus Diagnostics application
September 2021
User Guide 
171

---

•
The application has saved the selected number of measurements.
•
The application has saved 100,000 entries in a log file. This is the maximum number.
•
The file size is larger than 176 MB.
Note
As a best practice, create a new log file for each fieldbus segment and connection point
you are monitoring. Otherwise, ensure you update the segment name and measurement
location fields each time you collect data.
Procedure
1. Connect to the FOUNDATION fieldbus device or segment.
2. On the 
Fieldbus Diagnostics Overview
screen, tap 
Logging
.
3. Modify the following options, as needed.
Option
Description
User Name
The name of the person completing the
measurements.
Segment Name
The name of the fieldbus segment. If you tap the 
Go
Online
option, the Fieldbus Diagnostics application
creates a unique name. You can enter a new name.
File Name
The name of the .csv file that saves the measurements.
You can enter a file name or you can have the
application create one based on the device tag or
device ID if you tapped 
Go Online
before enabling
logging. If multiple devices are on the fieldbus
segment, the device with the lowest address is chosen
for the file name.
Measurement Location
The location on the fieldbus segment where the Trex
unit is connected to take the measurement. The
options are 
At Device
, 
At Fieldbus Control Module
,
and 
At Hub
.
Save Option
Select 
Append
to save the measurements to an
existing log file of the same filename, or select 
Replace
to overwrite the data in an existing log file with the
same filename. Append is the default option. The log
file is limited to 176 MB. If the file exceeds 176 MB, the
application can no longer append additional log files/
measurements to the existing file.
Fieldbus Diagnostics application
User Guide
September 2021
172
User Guide

---