User Manual
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Building Technologies Operating Instructions for ACS Operating and ACS Service CE1U5640en
HVAC Products 3 Applications Dec. 1, 2005
To change the trend definition, select in the left window the trend definition you want
to change. Use the right mouse button to click on the selected trend definition and
select Properties.... Window Trend properties is opened. The trend definition can
now be revised.
Now, you can start with the selection of data points for online trend logging.
To delete a trend definition, select in the left window the relevant trend definition. Use
the right mouse button to click on the selected trend definition and select Delete.
Caution: Any logging associated with the trend definition will also be deleted.
For more information, refer to the following chapters:
• Selecting data points for online trend logging
• Starting online trend logging
• Evaluating online trend logging
• Printing in online trend
• "Commissioning report" application
• External editing of online trend logging
3.4.4 Selecting data points for online trend logging
In the left half of the window, select the trend function for which you want to select
data points for trend logging. Position the onscreen pointer in the right half of the
window and select New – Data point.... Then, window Data point selection is
opened. Here, you can choose the data points you want to log.
The navigation with the Device view or the navigation with the Plant view appears as
a tree view, depending on which view you selected on the “View" menu. Click the
Change view button to obtain a device type view showing you all the device types
that belong to the devices selected with a tick in the boxes of the plant view. This
enables you to simultaneously add data points for several devices of the same type
with only one command. To return to the device or plant view, click again the Change
view button.
To simultaneously select several data points in the right half of the window, proceed
as follows:
• Use the left mouse button to click on the first of several successive data points.
Press the Shift key and hold it down. Now, use the left mouse button to click on the
last data point you want to select. The required data points are thus defined
• Keep the Ctrl key depressed and select all required data points with the help of the
left mouse button. Each of the data points clicked will be highlighted
Select Add to add the highlighted data points to the trend definition. After this
selection, select Close to return to the Online trend window. In the right half of the
Online trend window, you now find all added data points.
The same data point may exist in several trend definitions. The same data point is
shown in several columns. The columns have the following meaning:
Column Description
Channel
Channel for logging the data point
Line no.
Referring to the installation instructions of the respective
device
Name
Name of the data point
Device
Device to which the data point belongs
Address
Address of the device to which the data point belongs
Offset
Offset with which the data point is shown in the graph
Change
Delete
A
dd data points