Panel for Selecting the Trend Display

Click theVariable Trendbutton to open the following panel. By default, two trend display groups are predefined as MIN-MAX, with 3 curves and ALL with 8 curves (these contain $-parameters and therefore cannot be displayed directly). You have to apply the "*" filter in the User combo box to show these groups.

All trend configurations with $curves must first be assigned data points before you can display them (see Example).

Every trend curve displays the value of the data point element assigned to it over time. A trend display group can display up to 16 data point elements together (for example, temperature kiln 1, level tank 3, and so on).

Figure 1. Trend-Para panel for selecting the trend display

Although every user can use this panel to open and display trend displays, at least "para" authorization (userbit 4, see also User administration/ groups) is required if you want to create and edit your own trend display groups.

Internal checks of the consistence for older configurations can cause error messages. In order to avoid these messages, click each configuration (for example, when updating to version 3.0).

The select trend view panel contains the following controls:

Copy

Click on this button to duplicate and edit trend display groups, including the entire configuration, under a different name.

New...

Creates a new trend display group with one undefined trend display curve.

Up to 16 trend curves can be displayed.

Note: Use descriptive, unique names in order to avoid confusion. Special characters and spaces are not allowed.

HOW TO CREATE A NEW TREND DISPLAY GROUP

  1. Click on the button in Trend configuration editor panel.
  2. Enter the desired group name and number of curves for example:
  3. Select the previously created configuration to change the settings.
  4. Open the corresponding drop-down menu and select the first curve.
  5. Click on the data point selector to add a DPE to this curve (e.g. waermeleistung_3.value:_original.._value).
  6. Allocate DPEs to all other curves (e.g. heatoutput_3.C1.AVG_WT0, ..C2.AVG_WT0 und ..C3_AVG_WT0).
  7. Select a color, line style and scale (e.g. auto scale), etc. for every curve. Beware that for common scales (the auto scale with curve number option), only one scale will be displayed.
Note: You have now assigned fixed data point elements. If you want to use the trend display group (number of curves, line color and so on) independently of data point elements, activate the "use $parameters" option in the trend settings. The data point elements are replaced by $parameters. Now you can apply your settings to any other data point elements by replacing the $parameters with data point elements (see also Using predefined trend display group below) or by replacing the $parameters from a panel when they are displayed (see below).

Delete

Permanently deletes a trend display group from the system. Any associated configuration is lost.

Edit...

Opens the central trend display group editor for editing and modifying trend display groups (see configuration).

User

Searches for a trend by user name (who created the trend). Only active users are shown in the combo box.

Trend configurations filter

Searches for a trend by trend name.

Time range

Following default time ranges are available:

  1. Trend today open

  2. Trend yesterday closed

  3. Trend selected day closed

  4. Trend this week open

  5. Trend last week closed

  6. Trend defined timerange closed

  7. Trend last 24 hours open

  8. 3 day trend open

  9. Trend defined timerange open (Default: 60 min)

  10. Trend last 1 hour open

  11. Trend last 8 hours open

For customizing the selected time range see Forward >

Forward >

You can freely select a different, more specific time range for the trend display to be opened in addition to the time range selected in the "Time range" combo box. In this case only, it is required to press the Forward > button.

Time comparison trend

A time comparison trend allows displaying a curve with a time offset. You can compare the values of a day or any other time range.

  1. Activate the check box "active" in the "start comparison trend" section.
  2. Select a start time.
  3. For a synchronous start time click the “Start time” Button.
  4. Choose a day (comparison trend) that you want to compare with the day selected first (start time).
  5. Click the button to display the trend configuration.

The following panel compares the five minutes averages of two consecutive days for the data point heatoutput_3 (over a one hour period).

View

Shows the selected trend display group as a trend display for the selected time range.

Cancel

Closes the panel without sending the settings to the Variable Trend and without displaying a trend selection.