====== Alarm Extender (4 Inputs) ======

{{:cs:mervis-ide:35-help:alarmsextender4.png}}

==== Full Name ====

Lib.Mervis.v1_0.AlarmsExtender4

===== Description =====

.

==== Required Project References ====

  * Lib.Mervis

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

<code>
program test
    var
        alr: lib.mervis.v1_0.AlarmsExtender4;
    end_var

    alr();
end_program
</code>

===== Description of Inputs and Outputs =====

|Inputs |Name                             |Data Type    |Retain|Required Connection                 |Meaning|
|Alarm1 |[[AlarmTrigger.htm|AlarmTrigger]]|No           |No    |Alarm input 1                       |      |
|Alarm2 |[[AlarmTrigger.htm|AlarmTrigger]]|No           |No    |Alarm input 2                       |      |
|Alarm3 |[[AlarmTrigger.htm|AlarmTrigger]]|No           |No    |Alarm input 3                       |      |
|Alarm4 |[[AlarmTrigger.htm|AlarmTrigger]]|No           |No    |Alarm input 4                       |      |
|Status |[[AlarmsStatus.htm|AlarmsStatus]]|No           |No    |Extending input for additional alarms|      |


|Outputs   |Name                             |Data Type                                                                                     |Meaning|
|Alarm1Flag|bool                             |Indication of uncleared alarm 1 (explanation see [[AlarmsPriorities.htm|alarm priorities]])   |      |
|Alarm2Flag|bool                             |Indication of uncleared alarm 2                                                               |      |
|Alarm3Flag|bool                             |Indication of uncleared alarm 3                                                               |      |
|Alarm4Flag|bool                             |Indication of uncleared alarm 4                                                               |      |
|StatusOut |[[AlarmsStatus.htm|AlarmsStatus]]|Output for connection to superior alarm blocks                                                |      |


|Local Variables|Name                                                     |Data Type          |Retain|Meaning                        |
|AlarmFlags     |array[1..4] of [[../../Alarms/AlarmPoint.htm|AlarmPoint]]|Yes                |States of individual alarms     |      |


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