From 1:00 AM - 6:00 AM CST on Saturday, January 23, ni.com will be undergoing system upgrades that may result in temporary service interruption.
We appreciate your patience as we improve our online experience.
From 1:00 AM - 6:00 AM CST on Saturday, January 23, ni.com will be undergoing system upgrades that may result in temporary service interruption.
We appreciate your patience as we improve our online experience.
Returns the historical values from multiple tags in a single operation.
Reference to a specific tag or a group of tags on SystemLink Server or SystemLink Cloud.
Use Open Tag or Query Tags to obtain this reference.
Time range you specify to read historical tag values.
The default is set to read all values decimated to 1,000.
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.
Default: No error
Next page of historical tag data, if available.
Reference to a specific tag or a group of tags on SystemLink Server or SystemLink Cloud.
Use Open Tag or Query Tags to obtain this reference.
Data values of the tag history.
Boolean that indicates whether the node read the last of the data for the tag.
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.
Where This Node Can Run:
Desktop OS: Windows
FPGA: Not supported
Web Server: Supported in VIs that run in a web application