====== Alarm Trigger for Boolean Variables ======

{{:cs:mervis-ide:35-help:bool_to_alrtrig.png}}

==== Full Name ====

Lib.Mervis.v1_0.bool_to_alrtrig

==== Required Project References ====

  * Lib.Mervis

===== Description =====

Auxiliary block used for generating an alarm from a boolean variable.

===== Usage in ST =====

<code>
program test
    var
        inp: lib.mervis.v1_0.bool_to_alrtrig;
    end_var

    inp();
end_program
</code>

===== Inputs =====

|Inputs  |Name                                                    |Data Type                                |Retain|Required Connection                                    |Meaning|
|Input   |bool                                                    |No                                       |Yes   |Input value                                             |      |
|Priority|[[../../Alarms/AlarmPriorityType.htm|AlarmPriorityType]]|No                                       |No    |Alarm priority                                          |      |
|Delay   |time                                                    |No                                       |No    |Alarm delay (if zero, no delay is applied)              |      |

===== Outputs =====

|Outputs |Name                             |Data Type       |Meaning|
|Alarm   |[[AlarmTrigger.htm|AlarmTrigger]]|Output          |       |

===== Detailed Function Description =====

The block generates an alarm if the //Input// is active for at least the duration of //Delay// with the priority defined by //Priority//.