Installation and Maintenance Manual

VAV-SVX07A-EN 43
Tracer™ UC400 Controller Operations
Show Legend: Use this check box to show and hide the legend that displays the corresponding
color of each data point.
Stop Graph: Use this button to halt graphing when you have sufficient data for your purposes.
Session Log Tab
You can use the Tracer TU Data Logging Utility to capture live data from a controller at a specified
sampling rate. You can then graph subsets of the captured data in one or more graphs. To capture
live data, you first configure and start a session log that runs in the background using the Session
Log screen. You can then set up and launch one or more graphs that visually track data items
included in the session log using the View Graphs screen.
The Session Log tab allows you to select the specific data points tracked during session logging
along with the name and location of the log file. You can also save the setup definition and start
the session log from this screen. (See related topics below.)
Note: You cannot graph data items that are not included in the session log configuration.
Choose Data
Sampling Rate: Use the hh:mm:ss spin box to specify the time between each sample. For
example, a rate of 00:00:10 would result in a snapshot of data values being taken every 10
seconds.
File
Automatically name session log: Use this check box to accept the system generated log file
name and default location.
Browse: Click the Browse button to navigate to and specify an alternate file location, which is
then displayed in the entry box below.
(Log file entry box): Displays the selected path and file name, or use the entry box to manually
enter the full path and file name of the log file.
Data Selection
Category: Select a subsystem category from this drop-down list. For example, in the case of
a chiller, the list could include Compressor, Evaporator, Motor, Purge and so on.
Available Data: Lists all available data points associated with the category selected.
Selected Data: Displays all data points selected and transferred from the Available Data list
box.
Arrow buttons: Use these controls to transfer items back and forth between the Available Data
and Selected Data list boxes.
Save: Saves the session logging definition for future reuse.
Note: You must save the configuration before you can start data logging. Saving the session
log configuration activates the Start session logging button.
Cancel: Cancels session logging setup.
Start session logging: Click to start session logging after you have defined the sampling rate,
the log file name and location, and the data points to be included in the logging. (Session logging
continues until you terminate your connection to the controller and end your Tracer TU session.)
Data Log Setup Tab
Use the Data Log Setup tab to create up to 50 data logs-one for each point you want to track.
Data Logs Drop-Down Menu
The Data Logs drop-down menu allows the user to copy, edit, or delete.