====== DATETOTALHOURS ======

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

===== Function name =====

DATETOTALHOURS

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

<code st-iec>
PROGRAM DATETOTALHOURS_DEMO
    VAR
     DT1: DT;
        LR1:LREAL;
  END_VAR
 LR1 := DATETOTALHOURS(IN1 := DT1);
END_PROGRAM
</code>

===== Description =====

Returns number of hours since the beginning of our era (since 1.1. 0000, 00:00) for a particular date and time.

===== Inputs =====

|Input|Type    |Description|
|IN1  |ANY_DATE|Input value|

===== Outputs =====

|Output|Type |Description |
|=>    |LREAL|Output value|

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

{{:en:mervis-ide:35-help:datetotalhours_example.png}}\\
\\
This function is used where the number of hours between two datetime values has to be calculated.\\