To configure a delayed alert, open the PARA module and add an alert_hdl config to a datapoint. The delayed alert can be specified as a time interval in seconds via the text field
"Delay [s]" :
Figure 1. An Alert Delay for a Datapoint
Alert Delay
When the delay is higher than 0, the delayed alert functionality is activated for the alert range and the alert will be triggered when the specified delay condition is met.
When delay interval is 0 (empty), there is no delay condition and an alert will be triggered immediately.
The delay time is only taken into account when a value changes. This means that when the system shuts down during the delay time, the alerts will be triggered immediately after a
restart.
Note: The alert delay values must be consistent and must be the same for all ranges or in ascending order (from lower to higher range). If a smaller alert delay is
configured for a higher alert range than for a lower alert range, a warning is shown and the alert will not be saved:
Figure 2. Alert Delay Warning
The delayed alert functionality is supported for the following datapoint types:
DPEL_BOOL for the following alert config types:
continuous
discrete
DPEL_UINT, DPEL_INT, DPEL_ULONG, DPEL_LONG, DPEL_FLOAT for the following alert config types:
continuous
discrete
extended (For the "extended alert handling, set the config entry useExtendedAlarmHandling = 1 in the [ui] section of the config file.
