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How to

How to


Products: AS-B, Enterprise Central, Enterprise Server, AS-P, Virtual Project Servers
Functionalities: Trends
Product version: 3.2, 3.3, 2022
7/20/2021

Creating a Multi Trend Log List 

You create a multi trend log list to display values from multiple trend logs in one list so that you can compare the values, for example, when commissioning or validating an EcoStruxure BMS.

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You configure a multi trend log list to display values from multiple trend logs in one list. You compare values in a multi trend log list when you commission or validate an EcoStruxure BMS.

For example, on a b3 BACnet device, there are two inputs: SpaceTemp and SpaceHumidity. Both inputs have logs set up intrinsically. You want to print the last 3 days of history for these inputs. You create a multi trend log list for both inputs. You can export the multi trend log list to a .CSV file or an .XML file, or .XLSX file, and then use an external editor to compare the values.

If a trend log has no available value for a given time stamp in a multi trend log list, then the trend log displays an empty cell for that specific time. You can fill that empty cell with the latest known value.

You can change the column order in the multi trend log list and save the change.

You can add, edit, or remove trend logs from the multi trend log list at any time. You can also edit how trend logs are displayed in the multi trend log list. For more information, see Configuring a Trend Log Series in a Multi Trend Log List  .

Tip:

You can add a trend log to a multi trend log list using drag and drop.

You can configure the individual trend log series in a multi trend log list.

Important:

All configurations on individual trend log series are overriden if you configure the multi trend log list.

Temporary multi trend log list

You can view a group of trend log lists in a atemporary multi trend log list without creating a multi trend log list. For more information, see Viewing Trend Logs in a Temporary Multi Trend Log List  .

Multi trend log lists in WebStation

Multi trend log list can be created and viewed in WebStation. Note that the setting Log space (records) is disregarded by WebStation. When viewed in WebStation, WebStation will always display all values in the multi trend log list regardless of the Log space (records) setting.

Time Zone Modes in a Trend Log List

​In a trend log list, you can present the records of a trend log in different time zones: local time zone, EcoStruxure BMS server time zone, and UTC time zone.

For more information, see Time Zone Modes in a Trend Log List .

Calculation Methods

​Use a calculation method to process the records of the trend log before presenting them in a trend log list or a trend chart. The original records in the trend log are not affected by the calculation method. The calculation method is applied to the trend log records grouped by a specific time interval.

For more information, see Calculation Methods .

Important:

If you have selected a calculation method on a series, event icons are not displayed on that series in the multi trend log list.

Floating Point Values NaN, INF, and -INF

In the EcoStruxure Building Operation software, the floating point values “Not a Number”, positive infinity, or negative infinity may be displayed in the Basic property tab, in a trend log list, or a trend chart.

For more information, see Floating Point Values NaN, INF, and –INF .

To create a Multi Trend Log List 

  1. In WorkStation, in the System Tree pane, select the location where you want to create the multi trend log list.

  2. On the File menu, point to New and then click Trend .

  3. In the Create Object wizard, in the object type list, select Multi Trend Log List .

  4. In the Name box, type a name for the multi trend log list.

  5. In the Description box, type a description for the multi trend log list.

  6. Click Next .

  7. In the Configure Multi Trend Log List page, in the Log space (records) box, enter the maximum number of rows to display in the multi trend log list.

  8. In the Series box, click the Add button

     
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    to add a trend log to the multi trend log list.

  9. In the Name box, type a name for the trend series based on the added trend log.

  10. In the Description box, type a description for the trend series.

  11. Click Next .

  12. In the Display trend log box, enter the path to the trend log you want to add to the multi trend log list.

  13. Click Create .

  14. In the Series box, click the Add button

     
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    to add another trend log to the multi trend log list.

  15. In the Series box, select a trend series and then click the Edit

     
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    button to edit how the trend series is displayed.

  16. In the Series box, click the Remove

     
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    button to remove a trend series from the multi trend log list.

  17. Click Create .

The multi trend log list displays values from the trend logs you have added to the multi trend log list.

See Also

  • Multi Trend Log Lists
  • Adding a Trend Log to a Multi Trend Log List 
  • Configuring a Trend Log Series in a Multi Trend Log List 
  • Removing a Trend Log from a Multi Trend Log List 
  • Create Multi Trend Log Wizard - Configure Multi Trend Log List Page
  • Multi Trend Log List Series Properties
  • Configure Dialog Box – Operation Tab