• Create a "Standard project" and select CODESYS Control Win V3 as the device.
  • Define the target system by means of the Network scan.



  • 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.




  • Create a global variable list GVL with the variable g_sAlarmID.



  • Create a new FB named FB_AlarmNotifiable and implement the interface AlarmManager.IAlarmNotifiable.



    The method the Execute method is created automatically with the FB:



  • Adapt the Execute method as follows:

    Declaration

    //{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

    Implementation

    itfAlarmGroup := itfAlarm.GetAlarmGroup();
GVL.g_sAlarmID := itfAlarmGroup.GetStringID(itfAlarm.GetID());

  • Adapt the POU PLC_PRG as follows:

    Declaration

    VAR
    xAlarm              :    BOOL;
    fbAlarmNotifiable   : FB_AlarmNotifiable;
END_VAR

    Implementierung

    // no implementation


  • Insert a new alarm group in the Alarm configuration and configure an alarm as follows:



    In order for the fbAlarmNotifiable instance to also be called at an alarm, the Error alarm class must still be notified about it.




  • 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.