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Click the Modelon logo top left to return to the workspace selection. Modelon Impact version number is diplayed when mouse is hovered over logo.

Mode selection 🔗

The three mode selection buttons are located in the middle of the app bar and are used to select the mode of the application.

  • A lock icon next to the model name indicates that the model is read only and can not be edited. Duplicate the model to your workspace to be able to edit it.
  • While working on the Experimentation or Result mode, the modeling canvas will be in Read-only model i.e. no addition or deletion can be done to the model structure and code layer cannot be modified.
  • The keys 1, 2 and 3 on the keyboard are used to toggle between different modes. The keys also control what tabs are shown in the Details panel.

Model mode 🔗

In Modeling mode, all values displayed origin from the active Modelica model whose name is shown in the button and which is marked as active in the Workspace panel to the left. Any changes will also automatically be saved to the active Modelica model. When working in Modeling mode, the following tabs in the Details panel are available:

Experiment mode 🔗

Experimentation mode is used when the user wants to create an experiment using a particular analysis with certain settings and/or make changes to model parameters that are not necessary to be saved in the model artifact itself. An experiment can be thought of as a layer on top of the active model containing experiment values displayed in the Experiment summary tab. Experiments can be created on top of both writeable and read only models. When the model is simulated in experiment mode, settings and parameters will be taken from both the model and the experiment, with the parameters in the experiment taking priority - meaning that any experiment values will replace the underlying values in the model.

When experimentation mode is active, the following tabs are available in the Details panel:

All values belonging to the experiment are indicated in the Properties tab with a blue background and frame as shown below.

Experiment values can be removed by clicking the X to the right of the experiment modifier when hovered or selecting the entire value and deleting it followed by pressing enter. This will make the default value stored in the model appear.


Go to How-to > Set-up and run experiments chapter to learn about how to execute a model.

To get an understanding of the behavior of a system, experiments are typically run a number of times where key parameter values are swept to cover a certain parameter space. This can be done in Impact by using the range() operator. The range operator can only be used in experiment mode and is defined as

range(start_value, end_value, number_of_steps)

To use it, ensure you are in Experiment mode and simply type in the range for the parameters to be swept in the properties tab.


Click here to see how to set up and run a multi-simulation.

Result mode 🔗

The third button in the App bar is the Results button that enables the results mode. The results mode is used for analysis of models that have been executed. When the results mode is activated either manually or as a result of a finished execution, the most recent result for the active model is selected by default. The tabs available in results mode are:

In this mode, the user can browse the full result set in the Calculated values tab which is a tree structure representation of the generated simulation result. Alternatively, the user may opt to browse the result values in the Properties tab where parameters originating from the result will be shown in the respective value fields and where calculated variables are shown under the 'Variables' tab which is the last of the tabs.

Settings 🔗

Modelon Impact settings has five areas: Application, Execution, Export, Units and Workspace. Go to settings for details.

Help 🔗

Help button displays menu with options to:

  • Open the Help center in a new browser tab
  • Contact the support in a new e-mail. Some basic information about the browser environment is automatically included (in clear text) in the mail to facilitate contact with support and debugging.
  • Show available shortcuts and controls

Log out 🔗

Logs out of Modelon Impact.