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AVEVA™ Plant SCADA

[Alarm]StandbyCommandDelay

  • Last UpdatedJul 19, 2023
  • 1 minute read

Sets a delay (in milliseconds) that a standby alarm server will apply when executing alarm commands received from the main alarm server.

You may need to set this parameter if you execute alarm commands within one alarm scan time (for example, you execute acknowledgment as soon as alarm changes state) and you observe the error "Alarm: Property write error: 582" in the syslog.dat file of the alarm server process.

This can occur because redundant alarm servers monitor alarm conditions independently of each other, and it takes up to one alarm scan time for alarm to reach the same state on both servers. If an alarm command is issued within this time period while the alarm states are out of synch, the standby alarm server will not be able to mirror the command.

Setting a command delay on both alarm servers will allow time for the alarm state to reach the same state before mirroring the command. The delay should be typically set to the alarm scan time specified by the alarm server [Alarm]ScanTime INI parameter.

Note: This parameter can also be applied to a specific cluster or alarm server process. For more information, see Configure Alarm Parameters for a Specific Cluster or Process.

Allowable Values:

0 to 2147483647

Default Value:

0

See Also

Alarm Parameters

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