User Manual

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Building Technologies Operating Instructions for ACS Operating and ACS Service CE1U5640en
HVAC Products 3 Applications Dec. 1, 2005
3.5.6 Evaluating offline trend logging
To evaluate the data logged and stored in the central unit, they must first be
transferred to the PC. Logged data can be uploaded to the PC either from an active
trend definition (yellow) or from an executed trend definition (green):
In the left half of the window, select the trend definition for which you want to transfer
to the PC the data logged in the central unit. The selected data points appear in the
right half of the window. Position the onscreen pointer in the right half of the window.
Press the right mouse button and select New – Trend logging.... The program now
uploads the information about logging from the central unit. The process is shown in
window Upload trend logging. Then, dialog Trend logging properties is opened.
The window is subdivided into several sections:
General: Enter the name of trend logging (e.g. YYMMDD – 20011117 Test). In
addition, the information fields Start of logging and End of logging
appear. In these two fields, you can see when logging was started and
when active logging (yellow) was uploaded or when executed logging
(green) was stopped. The Status of logging can also be seen:
• Pending (light-blue): The trend definition has been transferred to the
central unit. The time of execution has not yet been reached however.
Logging will automatically be started later
• Active (yellow): For this trend definition, logging in the central unit is
currently in progress
• Executed (green): For this trend definition, logging in the central unit
has been completed
• Not available (white): This trend definition is not currently stored in the
central unit. In this central unit, there is no logging for this trend
definition in progress
• Error (red): The trend definition is erroneous and cannot be
evaluated
In addition, the status is identified by an appropriate color code of the
trend definition.
Graphics Here, scale the graph for the logging process.
You can define the total length of the Time axis [min], or whether the
length shall Automatically be determined by the program. When
selecting Automatically, the program will show the entire trend logging
process.
You can also define which shall be highest displayed value (Y-Max) and
the smallest displayed value (Y-Min), or whether these values shall
Automatically be determined by the program. When selecting
Automatically, the scale is adjusted such that all values will lie within the
displayed time axis. When scrolling through the logging, the scale is
continuously adjusted.
Close the dialog by clicking the Close button.
For evaluation, select logging in the left half of the window. The right half of the
window of the offline trend is now split in two:
• In the upper half of the window, you see all data points selected for logging
• In the lower half of the window, the logging process is shown in the form of 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.
Evaluating