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How to

How to


Products: AS-B, Edge Server, Enterprise Central, Enterprise Server, AS-P, Virtual Project Servers
Functionalities: Trends
Product version: 2023, 2024
12/17/2022

Editing or Commenting a Trend Log Record

You edit or comment a trend log record through the trend log list, for example, to correct a corrupt value or comment a specific record.

Note:

  • When editing an extended trend log record, the changes do not affect corresponding record in the connected trend log.

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​The trend log list numerically displays the records of a trend log or an extended trend log. The records of the trend log can be processed by a calculation method before they are presented in the trend log list.

The trend log list can only display one trend log at a time and must be manually refreshed to display recently recorded values.

 
action_zoom_plus_stroke Trend log list, schematic
Figure: Trend log list, schematic

You can manually add records to a trend log list for any type of trend log.

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 .

Period Timestamps in Trend Charts and Trend Log Lists

When a calculated value for a period is presented, the middle of the period is used as the timestamp.

Example:

The calculated value for the period 8:00-9:00 is stamped 8:30. If there is a value at 9:01, the next period is 9:00-10:00, which is stamped as 9:30. The full period may not have passed yet, but the value can be presented even if parts of the period are in the future.

Temporary Trend Log Lists

​To display a trend log without creating a new trend log list or trend chart, the trend log can be displayed in a temporary list or chart.

For more information, see Temporary Trend Log Lists .

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 edit a trend log record

  1. In WorkStation, in the System Tree pane, select the trend log list you want to edit.

  2. Select the record you want to edit, and then click the Edit/comment trend log record button

     
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    .

  3. In the Edit/comment trend log record dialog box, in the Value box, type the new value.

     
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  4. In the Comment box, type a comment.

  5. Click Save .

  6. On the main toolbar, click the Refresh button

     
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    .

The record is now edited, when the list is refreshed the new record with comment is displayed. All edits are stored and you can display a records history.

See Also

  • Displaying the History of a Trend Log Record
  • Trend Log Lists
  • Trend Log List Context Menu
  • Edit/Comment Trend Log Record Dialog Box