[Alarm]ScanTime

Determines the maximum rate at which the alarm server receives updates from the I/O server. A value of 500 (the default value) indicates that the minimum time between alarm transitions for a single alarm tag will be 500ms.

If you increase the scan time, it may reduce the load on the I/O server due to a reduction in the required subscription rate. However, this will depend on whether or not any other servers have subscribed to a device at a higher rate.

This parameter is modified by the Computer Setup Wizard as well as the Computer Setup Editor.

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 (milliseconds)

Default Value:

500

See Also

Alarm Parameters