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如何

如何


产品： AS-L, AS-B, Enterprise Central, Enterprise Server, AS-P, Project Configuration Tool
功能： 趋势
产品版本： 2.0, 2.1, 3.0, 3.1
2018/12/20

Viewing a Trend Chart in a Multi Trend Log List

You view a trend chart in a multi trend log list to be able to export the information.

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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 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. 有关更多信息，请参阅 Configuring a Trend Log Series in a Multi Trend Log List  .

提示：

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.

重要：

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. 有关更多信息，请参阅 Viewing Trend Logs in a Temporary Multi Trend Log List  .

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.

有关更多信息，请参阅 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.

有关更多信息，请参阅 计算方法 .

重要：

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.

有关更多信息，请参阅 Floating Point Values NaN, INF, and –INF .

To view a trend chart in a multi trend log list

  1. In WorkStation, in the System Tree pane, select the trend chart you want to view in a multi trend log list.

  2. On the trend chart toolbar, click the View in multi trend log list button

     
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    .

The trend chart is displayed in one single multi trend log list that you can export to an .XML or a .CSV file.

请参阅

  • Multi Trend Log Lists
  • 趋势图
  • 趋势图工具栏
  • Multi Trend Log List View
  • Exporting a Multi Trend Log List to .XML 
  • Exporting a Multi Trend Log List to .CSV