FUN
---


.. figure:: ../media/image882.png
   :figwidth: 4.39583in
   :align: center 

**Purpose**

To create a time-dependent signal.

**Procedure** 

If the input signal is FALSE, the output signal is zero. If the input signal is TRUE, one of the following signals are output:

+-------------+------------------------------------------------------------------------------------------------+
| Sine        | :math:`y=A \operatorname{Sin}\left(B\left(t-t_{\text {start }}\right)-C\right)`                |
+-------------+------------------------------------------------------------------------------------------------+
| Parabola    | :math:`y=A+\left(B+C\left(t-t_{\text {start }}\right)\right)\left(t-t_{\text {start }}\right)` |
+-------------+------------------------------------------------------------------------------------------------+
| Exponential | :math:`y=A e^{B\left(t-t_{\text {start }}\right)-C}`                                           |
+-------------+------------------------------------------------------------------------------------------------+

where is the time that the logical input signal became TRUE.

**Parameters** 

========= ========= ==== ===== ======= =======
Parameter input     unit range default remarks
========= ========= ==== ===== ======= =======
Function  Sine/                        
                                       
          Polynome/                    
                                       
          Exp                          
A         real                         
B         real                         
C         real                         
========= ========= ==== ===== ======= =======

**Remarks** 

If no input signal is connected to the input channel a value of TRUE is assumed

**Examples** 

.. figure:: ../media/image886.png
   :figwidth: 3.40625in
   :align: center 

   Example system

.. figure:: ../media/image887.png
   :figwidth: 2.77083in
   :align: center 

   Sine (input: A=1, B= 1, C=1)

.. figure:: ../media/image888.png
   :figwidth: 2.77083in
   :align: center 

   Polynome (input: A=20, B=-10, C=1)

.. figure:: ../media/image889.png
   :figwidth: 2.77083in
   :align: center 

   Exponential (input: A=1, B=0.5, C=2)

.. figure:: ../media/image890.png
   :figwidth: 2.77083in
   :align: center 

   Sine function (input: A=1, B= 1, C=1) controlled by a logical input signal



.. include:: substitutions_control.rst