User Manual

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Building Technologies Operating Instructions for ACS Operating and ACS Service CE1U5640en
HVAC Products 3 Applications Dec. 1, 2005
period of time, you can either extend the interval or log a smaller
number of data points.
Confirm the entries by clicking the OK button. Underneath the trend definition,
another directory with the new logging is shown now (yellow, to identify the current
logging process). This logging process will be selected automatically and the right half
of the Online trend window is now split in two:
• The upper half shows you the selected data points, as before
• The lower half shows the logging process as a graph
During the logging process, you can start to evaluate the last values of the current
online trend logging, or you can do it when logging is completed.
To stop logging, use the right mouse button to click on the logging and select Stop
trend logging. Trend logging is now highlighted in white, which means that logging is
terminated.
When logging is completed, you can access the data at any time and evaluate the
logging pcoess.
For more information, refer to the following chapters:
• Creating / changing an online trend definition
• Selecting data points for online trend logging
• Evaluating online trend logging
• Printing in online trend
• External editing of online trend logging
3.4.6 Evaluating online trend logging
To make an evaluation, select the logging in the left half of the window. The right half
of the window of the online trend is now divided in two:
• The upper half shows you all the data points selected for logging
• The lower half shows the logging process as a graph
To identify a data point in the graph
or to display a value at a certaint time,
position the top of the onscreen pointer on the point of intersection of the value and
the vertical time mark: A window with date, time of day, description of the data point
and value of the data point appears. This function is not enabled when logging is in
progress.
To show data points in the graph or to hide them,
click on the little box in the
Channel column of the relevant data point. When the little box contains a tick, the
relevant data point is added to the graph.
To show a data point in the graph with an offset,
use the right mouse button to
click on the data point and select Properties.... In Window Trend data point
properties, you can now determine the Offset.
To change the scaling of the graph,
use the right mouse button to click on the
logging and select Properties.... You can also select logging with the left mouse
button and use the following button:
Window Trend logging properties is opened. The window is subdivided into several
sections:
Stop logging
Evaluating trend logging