Trend management

If the trend function has been activated, trends and reports are reached via MY PAGES. First open the page containing the objects of interest. Then click the desired object and select TREND in the dialog that opens. The trend page is also reached via the top menu by clicking TREND.

Information

When the trend page is opened via a page object, trend data is automatically retrieved for all signals linked to the current object. If the trend page is opened via the top menu, a dialog is shown instead where settings can be made to select which trend data to use and how it should be displayed.
The trend settings dialog is also accessed via the Trend settings button in the top menu.

There are two ways to change settings for the current trend.

The top menu contains the following settings:

Setting:	Description:
Lock X	Locks the X axis when zooming with the mouse wheel
Lock Y	Locks the Y axis when zooming with the mouse wheel
Show overview	Displays a longer overview below main trend view
Real time trend	Reads real-time values
More details	Disables data down sampling. (Can affect performance for trend view)
Periods	Different standard time periods + custom period. Can also step forward and backward with chosen step length
Move info box	Provides the opportunity to change the location or hide the info box

The following settings can be made via trend settings:

Setting:	Description:
From	Date and time from which data is to be retrieved
To	Date and time when data is to stop being retrieved
Show multi axes	Several axes allow the separation of different data types on different axes
Trend view	Provides the opportunity to present trend data in ways described in table below
Tags	Select the tags for which trend data is to be retrieved

Trend data can be displayed in the following trend views:

(For a deeper explanation of the views, see information box below)

View:	Description:
Trend	Curve Trend (Standard)
Trend (real time)	Read values with the highest possible frequency and update in real time
Annual average	Bar chart with annual average of selected tags
Monthly average	Bar chart with average for all months of the year
Weekly average	Bar chart with average value for all weeks of the year
Daily average	Bar chart with average for all days of the selected month
Hourly average	Bar chart with average for each hour during selected day
Annual consumption	Bar chart with annual consumption
Monthly consumption	Bar chart with consumption for all months of the year
Weekly consumption	Bar chart with consumption for all weeks of the year
Daily consumption	Bar chart with consumption for all days of the selected month
Hourly consumption	Bar chart with consumption for each hour during selected day
Annual activity	Bar chart with annual activity (% of time measured value> 0)
Monthly activity	Bar chart with activity for all months of the year
Weekly activity	Bar chart with activity for all weeks of the year
Daily activity	Bar chart with activity for all days of the selected month
Hourly activity	Bar chart with activity for each hour during selected day

Information trend-views

The time shown as default in the different views are the following:

View:	Description:
Yearly	From the entire year in the From date to the entire year in the To date
Monthly	From the entire year and month in the From date to the entire year and month in the To date.
Weekly	All weeks during the year in the From date
Daily	All days during year and month in the From date
Hourly	All hours during the day in the From date

The calculation done on tags in the different trend views are:

View:	Description:
Average	Average for the tag over chosen period
Usage	Calculates difference between min and max value of tag over chosen period. Meter tags are suitable for this
Activity	How many % of the tag values over chosen period are larger than 0
Time active	How long time over chosen period the tag has been larget than 0

Information

To retrieve trend data and update the chart, click the UPDATE button in the trend settings dialog.
To export the current trend data to the CSV-file, click the EXPORT button.

Tip!

You can click on the tag-description in the top-right corner of the chart to enable or disable it in the graph.

Information

The chart can be zoomed in and out using the scroll wheel on the mouse.

The chart axes are scaled automatically according to the available measurement data. This can also be changed to use the respective tag area. It is also possible to change the scaling on the y-axis by clicking on it.

If the mouse is dragged over the measurement points in the chart, a pop-up box is displayed with information about time stamp and measurement value.

Shown period in the main trend window can also be changed by dragging and dropping over a certain period in the overview window.

NOTE! If the graph is zoomed when real time trend has been selected, the graph will stop auto-scrolling.

Delete trend data

It is possible to delete trend data from Web Port’s web interface. It is done by opening the trend view for a certain tag from its tag list, click specific trend points, and selecting Delete in the sidemenu.

In the next step it is also possible to delete all trend points within an arbitrary time interval.
Use this functionality carefully, since deleted trend points cannot be restored without a full backup.