Restrictions

  • Delayed Alerts can be used for CAME delay, but not for GONE delay.
  • The delayed alert functionality cannot be used and is not shown for the following alert config types:
    • Multi-instance alert
    • Summary alert
  • Delayed alerting does not work for alerts that are manually triggered by the _event attribute or come from the PLC.
  • The alert delay cannot be used in combination with a hysteresis by design.

    Values of all alert config types for which a hysteresis can be used have a drop-down menu that allows selecting a hysteresis for all alert ranges:

    Figure 1. Value Hysteresis
  • When an alert has multiple alert ranges with an alert delay and a value meets the higher alert range, then all intermediate alerts are triggered immediately.
    Note:
    The additional configuration of a time smoothing (_smooth config) can be used to delay a GONE message.