block RealExpression "Set output signal to a time varying Real expression"
Modelica.Blocks.Interfaces.RealOutput y = 0 "Value of Real output"
annotation (
Dialog(group = "Time varying output signal"),
Placement(transformation(extent = {
{100, -10},
{120, 10}})));
annotation (
Icon(
coordinateSystem(
preserveAspectRatio = false,
extent = {
{-100, -100},
{100, 100}}),
graphics = {
Rectangle(
extent = {
{-100, 40},
{100, -40}},
fillColor = {235, 235, 235},
fillPattern = FillPattern.Solid,
borderPattern = BorderPattern.Raised),
Text(
extent = {
{-96, 15},
{96, -15}},
textString = "%y"),
Text(
extent = {
{-150, 90},
{150, 50}},
textString = "%name",
lineColor = {0, 0, 255})}),
Documentation(info = "<html>\n<p>\nThe (time varying) Real output signal of this block can be defined in its\nparameter menu via variable <strong>y</strong>. The purpose is to support the\neasy definition of Real expressions in a block diagram. For example,\nin the y-menu the definition \"if time < 1 then 0 else 1\" can be given in order\nto define that the output signal is one, if time ≥ 1 and otherwise\nit is zero. Note, that \"time\" is a built-in variable that is always\naccessible and represents the \"model time\" and that\nvariable <strong>y</strong> is both a variable and a connector.\n</p>\n</html>"));
end RealExpression;