Query Tags (G Dataflow)

Connection to the server.

If you leave this input unwired, this node uses the default connection. It automatically retrieves your SystemLink Server credentials when you execute the application on a managed system or server.

Paths to tag references.

Note  

Tag paths do not support spaces. If an illegal character is present, the node returns an error.

Specific words provided to find tags.

Key-value pairs that exist as metadata on a tag.

Error conditions that occur before this node runs.

The node responds to this input according to standard error behavior.

Standard Error Behavior

Many nodes provide an error in input and an error out output so that the node can respond to and communicate errors that occur while code is running. The value of error in specifies whether an error occurred before the node runs. Most nodes respond to values of error in in a standard, predictable way.

error in does not contain an error	error in contains an error
If no error occurred before the node runs, the node begins execution normally. If no error occurs while the node runs, it returns no error. If an error does occur while the node runs, it returns that error information as error out.	If an error occurred before the node runs, the node does not execute. Instead, it returns the error in value as error out.

Default: No error

Number of tags skipped to limit the amount returned from the server.

If the input is left empty, the query returns the first 1000 results by default.

Number of tags requested from the server.

If the input is left empty, the query returns the first 1000 results by default.

Tags the server references to communicate measurement data.

Total number of tags on the server.

Error information.

The node produces this output according to standard error behavior.

Standard Error Behavior

Many nodes provide an error in input and an error out output so that the node can respond to and communicate errors that occur while code is running. The value of error in specifies whether an error occurred before the node runs. Most nodes respond to values of error in in a standard, predictable way.

error in does not contain an error	error in contains an error
If no error occurred before the node runs, the node begins execution normally. If no error occurs while the node runs, it returns no error. If an error does occur while the node runs, it returns that error information as error out.	If an error occurred before the node runs, the node does not execute. Instead, it returns the error in value as error out.