A list of key new features in System Modeler 12.1.

Modeling

• Customizable user modes simplify and adjust the interface in presentation and education scenarios.



• User modes replaces what was called Window Layout in earlier versions of WSM.
• "Modeler" is the default user mode, giving the user access to all modeling tools.
• "Beginner" is a restricted and simplified mode (fewer tools and views and fewer options in dialogs).
• "Presenter" can be used when showing models during a presentation.
• Toggle user mode in the lower-right corner of Model Center.

• Extended GUI support for Modelica
• Attributes of predefined types such as min, max and nominal.
• Annotations such as choices, Evaluate, HideResult, absoluteValue, Inline.
• Better support for configurable models using redeclare and constrainedby
• Modifying the type of a component declaration.

• Enhancements of the Modelica Text View
• Improved performance.
• Copy or print class definition with all the annotations stripped.
• Jump to error location.

• Usability enhancements of the Diagram View
• Reset tool to the Pointer tool when Esc is pressed in icon/diagram view with no selected items (first press deselects items).
• Rotate selected items 90 degrees in icon/diagram view if Space is pressed during a move operation.
• More intelligent mouse click selection of objects.

• Improved class documentation
• Enriched automatically generated information.
• More relevant search results.
• Improved performance.
• Export of HTML documentation.

• Strict Modelica compliance
• More pedantic rejection of noncompliant Modelica code.
• More informative error messages for invalid Modelica code.

• Modelica Standard Library
• Now including Version 3.2.3.

Simulation

• Refined handling of start attributes in Simulation Center
• Setting start attributes in Equation Browser.
• Indication of unused start attributes.

• Improved usability in Equation Browser
• Extended linking of simulation log messages to equation systems.
• Distinction between blocks and equation systems.

• Indication of where to find plotted variables in experiment's Plot tab.

• Plot measurements give detailed information for a point or an interval in time.

• Plot curve context menu.

• Each plot axis can be zoomed individually.

• Plotting with two y axes, allowing variables with two incompatible units to naturally coexist in a single plot.

• Storing choice of axis display unit in model plots.

• Choice of time axis display unit.

• Dedicated plotting of clocked variables from synchronous models.

Computation

• Support for Modelica language constructs for synchronous models.
• Compatible with the Modelica_Synchronous library (planned for inclusion in Modelica Standard Library).

• Alignment of build and validation of simulation models.

• Colored Jacobians for faster Jacobian evaluation.

• Improved equation system tearing.

• Improved symbolic processing of equation systems with both discrete-valued and continuous-valued variables.

• More conservative treatment of variables that are only conditionally incident to an equation.

• Improved ability to recover from errors during simulation, such as asserts.

See New in System Modeler for more information on new features.