====== Alarm Trigger for Boolean Variables (4 Inputs) ======

{{:cs:mervis-ide:35-help:bool4_to_alrtrig.png}}

==== Full Name ====

Lib.Mervis.v1_0.bool4_to_alrtrig

==== Required Project References ====

  * Lib.Mervis

===== Description =====

Auxiliary block used for generating alarms for up to four boolean variables.

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

<code>
program test
    var
        inp: lib.mervis.v1_0.bool4_to_alrtrig;
    end_var

    inp();
end_program
</code>

===== Inputs =====

|Inputs                                       |Name                                                    |Data Type                                |Retain|Required Connection                                    |Meaning|
|Input1\\ Input2\\ Input3\\ Input4            |bool                                                    |No                                       |Yes   |Input value                                             |      |
|Priority1\\ Priority2\\ Priority3\\ Priority4|[[../../Alarms/AlarmPriorityType.htm|AlarmPriorityType]]|No                                       |No    |Alarm priority                                          |      |
|Delay1\\ Delay2\\ Delay3\\ Delay4            |time                                                    |No                                       |No    |Alarm delay (if zero, no delay is applied)              |      |

===== Outputs =====

|Outputs                          |Name                             |Data Type       |Meaning|
|Alarm1\\ Alarm2\\ Alarm3\\ Alarm4|[[AlarmTrigger.htm|AlarmTrigger]]|Output          |       |

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

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