LabVIEW Datalogging and Supervisory Control Module Programming Reference Manual

Delete Traces VI

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Updated2024-11-20
3 minute(s) read

Deletes a set of traces from a given Citadel database. Data deleted with this VI cannot be recovered.

Inputs/Outputs

timeout (30 s) —

timeout specifies the maximum time, in seconds, that this VI waits for reading data from the Citadel database. The default is 30. A timeout value of less than or equal to 0 indicates no timeout, which means this VI waits indefinitely until this VI receives data from the Citadel database. This VI ignores this value if you set show status bar to TRUE.

database name —

database name is the name of the Citadel database from which you want delete the traces.

Note This VI does not operate on a remote database.

trace names —

trace names specifies the traces. You can specify either Shared Variable references or existing traces for this input.

error in (no error) —

error in describes error conditions that occur before this node runs. This input provides standard error in functionality.

options —

options are the settings for the delete operation.

show status bar (T) —

show status bar enables a progress bar during the operation if show status bar is TRUE.

compact (T) —

compact compacts the source database to free the disk space previously consumed by the removed data if compact is TRUE. This input has no effect if no gaps exist in the database that is being archived. If you set this parameter to FALSE, the source database is not compacted.

use * as wildcard (F) —

use * as wildcard signals this VI to interpret the asterisk character as a wildcard character in any trace name given if use * as wildcard is TRUE. The wildcard matches any set of zero or more characters.

database name out —

database name out returns the name of the Citadel database from which you want delete the traces.

error out —

error out contains error information. This output provides standard error out functionality.