About Probes

Variables can be collected and displayed in separate lists (watchlists). A watchlist can have the option live plot, meaning that the scalar variables of the watchlist are plotted during simulation.

Several watchlists can be specified for a single simulation. If the watchlists have the live plot option, then several plot windows can be displayed during the simulation.

Important: Before R2022x FD01 (FP.2205), watchlists and live plots were separate probes. If you work with old scenarios, live plot probes may still be present in your scenarios. For more information, see About Watchlist and Live Plot Probes Created Before R2022x FD01 (FP.2205).

Signal operator probes can be applied on signals in watchlists.

The signal operator probe results are Knowledge parameters.

You can create probes for the variables monitored on the diagram. These probes have the name Pinned Variables probes.

Measure probes are used to track distances and angles in a mechanism during a scenario simulation.

Measure probes can only be used in scenarios for objects containing both logical and physical model.

Interference probes can be defined to detect clashes between two products.

Interference probes can only be used in scenarios for objects containing both logical and physical model.

Modelica complete result probes record complete results for the Modelica behavior.

The Modelica complete result probe is by default enabled by the option Store complete Modelica results in the execution setup, see Simulation Setup Dialog Box.

The probe generates a Modelica Complete Result node in the scenario result part of the tree. See Simulating and Generating Results.

Important: Only the result of Dymola behaviors and Context behaviors can be stored in Modelica complete results. The result of FMUs inserted directly in the functional or logical model cannot be stored. However, the result of FMUs inserted into Dymola behaviors or Context behaviors can be stored.

Modelica complete result probes can be compared with steady state probes, see next section.

A steady state probe is used to record the values of all variables for one selected time point.

Steady state probes can be compared to Modelica complete result probes; the latter record complete set of results, the former record the result for a certain time point.

Important: Only the result of Dymola behaviors and Context behaviors can be stored in steady state probes. The result of FMUs inserted directly in the functional or logical model cannot be stored. However, the result of FMUs inserted into Dymola behaviors or Context behaviors can be stored.

A camera viewer probe focuses on one particular part or on what happens from the vantage of a particular camera mounting point.

Camera probes open dedicated windows called camera viewers that you can see as you work in the main 3D view.

Camera tracking means that the camera is rotating around a fixed point, so the attached 3D object is still visible when moving. You can select a part or sub-assembly to track in the 3D view. The part center is used for individual parts being tracked. When selecting a subassembly, the center of all the parts in the sub-assembly are used as the tracked position.

Camera mounting means that the camera is fixed relative to the attached 3D object, which appears immobile; the camera is locked into a particular position, regardless of where the item it tracks moves. You can select whether the camera is fixed on the part being tracked, or whether it is mounted to any other object in the viewer.

Camera viewer probes are also part of the 3D Simulation app; for more information about Camera Viewer Probes in 3D Simulation see 3D Simulation User´s Guide: Analyzing Simulation Scenarios with Probes.