====== CTU ======

{{:en:mervis-ide:35-help:ctu.png}}

===== Block name =====

CTU

===== ST call =====

<code st-iec>
PROGRAM CTU_DEMO
    VAR
     BOOL1,BOOL2,BOOL3: BOOL;
    INT1,INT2: INT;
     FB:CTU;
    END_VAR
    FB(CU:=BOOL1,R:=BOOL2,PV:=INT1,Q=>BOOL3,CV=>INT2);
END_PROGRAM
</code>

===== Description =====

The block acts as a counter counting up from zero to the preset value //pv//.

===== Inputs =====

|Input|Type|Description                  |Default value|
|CD   |BOOL|Rising edge counts one up    |False        |
|R    |BOOL|Sets the counter to //// zero|False        |
|PV   |INT |Final value of the counter   |0            |

===== Outputs =====

|Output|Type|Description                                                              |
|Q     |BOOL|State when the counter finished counting (counting finished: //q//=true).|
|CV    |INT |Current value of the counter                                             |

===== Application example =====

{{:en:mervis-ide:35-help:ctu_example.png}}