Reads alarms for the specified tags, processes, or alarm areas. You must manually select the polymorphic instance to use.

Note This VI interacts with data in the Citadel database only.

Use the pull-down menu to select an instance of this VI.


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Inputs/Outputs

  • cTag_Readerlvclass.png —

    Tag Reader in specifies the data of a group of tags that the Open Tag Reader VI opens.

  • cstr.png tag name —

    tag name specifies the name of the tag for which you want to read the alarms.

  • ccclst.png time interval —

    time interval specifies the span of time between the start timestamp and stop timestamp. If you do not wire this input, this VI reads all the alarms that are relevant to the specified tag from the Shared Variable Engine (SVE).

  • catrn.png start timestamp —

    start timestamp specifies the date and time associated with the first alarm that this VI retrieves from the SVE. If you do not wire this input, this VI extracts the alarm starting at the time of the first alarm in the SVE.

  • catrn.png stop timestamp (now) —

    stop timestamp specifies the date and time associated with the last alarm that this VI retrieves from the SVE. If you do not wire this input, this VI extracts the alarm up to the last alarm available in the SVE.

  • cerrcodeclst.png error in (no error) —

    error in describes error conditions that occur before this node runs. This input provides standard error in functionality.

  • iTag_Readerlvclass.png —

    Tag Reader out returns data of the tags that this VI opens.

  • i1dcclst.png alarms —

    alarms returns the alarm information for the specified shared variables, processes, or alarm areas.

  • istr.png alarm URL —

    alarm URL returns the name of the alarm.

  • iatrn.png set time —

    set time returns the time that the alarm occurred.

  • istr.png set user —

    set user returns the user who was logged in when the alarm activated.

  • iatrn.png ack time —

    ack time returns the time that the alarm was acknowledged.

  • istr.png ack user —

    ack user returns the user who acknowledged the alarm.

  • iatrn.png clear time —

    clear time returns the time that the alarm was cleared.

  • istr.png clear user —

    clear user returns the user who cleared the alarm.

  • idbl.png setpoint —

    setpoint returns the value of the shared variable at the time when the alarm occurred.

  • idbl.png value —

    value returns the shared variable value when it changes alarm states. The shared variable value updates only when the shared variable changes alarm states and is not necessarily the most recent alarm value.

  • iu32.png priority —

    priority returns the priority level of the alarm.

  • istr.png alarm area —

    alarm area returns the alarm group, or area, to which the alarm belongs.

  • istr.png alarm description —

    alarm description returns a description of the alarm or event.

  • istr.png ack comment —

    ack comment returns the message the ack user entered when the user acknowledged the alarm.

  • ibool.png event? —

    event? returns TRUE if the alarm is an event.

  • iu64.png Refnum —

    Refnum return the reference number of the alarm.

  • ierrcodeclst.png error out —

    error out contains error information. This output provides standard error out functionality.