This information is part of the Modelica Standard Library maintained by the Modelica Association.

This block transforms a Real input signal u into a Boolean output signal y:

• When the output was false and the input becomes greater than parameter uHigh, the output switches to true.
• When the output was true and the input becomes less than parameter uLow, the output switches to false.

The start value of the output is defined via parameter pre_y_start (= value of pre(y) at initial time). The default value of this parameter is false.

uLow	Value: Type: Real Description: If y=true and u
uHigh	Value: Type: Real Description: If y=false and u>uHigh, switch to y=true
pre_y_start	Value: false Type: Boolean Description: Value of pre(y) at initial time