This information is part of the Modelica Standard Library maintained by the Modelica Association.
This block visualizes a Boolean variable in a diagram animation. The Boolean variable to be visualized can be defined in the following ways:
If the Boolean variable is false the block is "grey", otherwise, it is "green". The two versions of the block are shown in the following image (in the right variant, the name of the variable value that is displayed is also shown below the icon):
The usage is demonstrated, e.g., in example Modelica.Blocks.Examples.BooleanNetwork1.
Description: = true, if activePort enabled
Default Value: false
Description: Boolean variable to visualize if use_activePort=false (time varying)