#*-------------------------------------------------------------------
* EMSO Model Library (EML) Copyright (C) 2004 - 2007 ALSOC.
*
* This LIBRARY is free software; you can distribute it and/or modify
* it under the therms of the ALSOC FREE LICENSE as available at
* http://www.enq.ufrgs.br/alsoc.
*
* EMSO is distributed under the terms of the ALSOC LICENSE as
* available at http://www.enq.ufrgs.br/alsoc.
*-----------------------------------------------------------------------
* Author: Jonathan Ospino P.
* $Id: Step.mso  2012$
*---------------------------------------------------------------------*#

using "types";
 
Model Step
	
	ATTRIBUTES

	Pallete=true;
	Icon="icon/Step2";
	Info="== Step signal source ==.";

	
	PARAMETERS

	Start_time as time_sec(Brief="Time of the step",Default=0);
	Initial_Value as Real(Brief="Initial value of the variable",Default=0);
	Final_Value as Real(Brief="Final value of the variable",Default=0);

		
	VARIABLES

	out Out as Real(Brief="Output",Protected=true,PosX=1,PosY=0.5);

	
	EQUATIONS
		
	if time<Start_time then
		Out=Initial_Value;
	else
		Out=Final_Value;
	end
	
end