Gets or sets the deadband for logging a shared variable in the Citadel historical database. To use this property, you must install the LabVIEW Datalogging and Supervisory Control Module.

Use this option to improve the performance of an application by limiting unnecessary datalogging. LabVIEW logs a new shared variable value only if that value differs by at least the deadband value from the value previously logged. The default value is 0%, which logs each new value for the shared variable. This option is available only for shared variables with a Data Type of Double or Single.

Note You can enable logging only for network-published shared variables.

This property is similar to the Value Deadband option on the Logging page of the Shared Variable Properties dialog box.

Remarks

The following table lists the characteristics of this property.

Short Name Logging.Deadband
Data type cdbl.png
Permissions Read/Write
Available in Run-Time Engine No
Available in Real-Time Operating System No
Settable when the VI is running Yes
Loads the front panel into memory No
Need to authenticate before use No
Loads the block diagram into memory No
Remote access allowed Yes