Logging:Deadband Property

LabVIEW 2018 Help


Edition Date: March 2018
Part Number: 371361R-01
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Short Name: Logging.Deadband

Requires: Base Development System

Class: Variable Properties

To Use: Create a property.

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.

Data type
PermissionsRead/Write
Available in Run-Time EngineNo
Available in Real-Time Operating SystemNo
Settable when the VI is runningYes
Loads the front panel into memoryNo
Need to authenticate before useNo
Loads the block diagram into memoryNo
Remote access allowedYes

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