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• Create a "Standard project" and select CODESYS Control Win V3 as the device.
• Define the target system by means of the Netzwork Network scan.
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• Insert an Alarm configuration in the device tree.
  Here the Error, Info, and Warning alarm classes are created automatically, as well as the AlarmStorage object.In addition, a AlarmManagerTask is also created.

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• Create a global variable list GVL with the variable g_sAlarmID.
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• Create a new FB named FB_AlarmNotifiable and implement the interface AlarmManager.IAlarmNotifiable.
  
  

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  The method the Execute method is created automatically with the FB:
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• Adapt the Execute method as follows:
  
  

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  Column width 7 Declaration Column width 93 Code Block theme Confluence //{warning 'add method implementation '} (* Executes the action.*) METHOD Execute VAR_INPUT (* The currently processed alarm state transition. This will be evaluated in order to determine, whether the action has to be executed or not*) eCurrTransition : ALARMMANAGER.AlarmStateTransition; (* The alarm, for which the action has to be performed*) itfAlarm : ALARMMANAGER.IAlarm; (* An optional pointer to a structure variable containing additional parameter*) pbyAdditionalData : POINTER TO BYTE; END_VAR VAR itfAlarmGroup : ALARMMANAGER.IAlarmGroup; END_VAR

  
  

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  Column width 7 Implementation Column width 93 Code Block theme Confluence itfAlarmGroup := itfAlarm.GetAlarmGroup(); GVL.g_sAlarmID := itfAlarmGroup.GetStringID(itfAlarm.GetID());

  
  

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• Adapt the POU PLC_PRG as follows:
  
  

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  Column width 7 Declaration Column width 93 Code Block theme Confluence VAR xAlarm : BOOL; fbAlarmNotifiable : FB_AlarmNotifiable; END_VAR

  
  

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• Insert a new alarm group in the Alarm configuration and configure an alarm as follows:
  
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  In order for the fbAlarmNotifiable instance to also be called at an alarm, the Error alarm class must still be notified about it.

  
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• Load the project to the controller and start it.
  Set the xAlarm variable to TRUE in the POU PLC_PRG.
  Now the global variable GVL.g_sAlarmID will pass the MyAlarmId that was set up in the alarm configuration.

  
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