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Multi Read History

Version:
Last Modified: November 14, 2019

Returns the historical values from multiple tags in a single operation.

tags in

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.

window

Time range you specify to read historical tag values.

The default is set to read all values decimated to 1,000.

error in

Error conditions that occur before this VI runs. The VI responds to this input according to standard error behavior.

next window

Time range you specify to read historical tag values.

The default is set to read all values decimated to 1,000.

tags out

Reference to a specific tag or group of tags on SystemLink Server or SystemLink Cloud.

Use Open Tag or Query Tags to obtain this reference.

values

Historical data values of the tag(s).

end of data?

Boolean that indicates whether the node read the last of the data for the tag.

error out

Error information. This VI produces this output according to standard error behavior.

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