Table Of Contents
Multi Read History
Version:
Last Modified: July 9, 2021
Returns the historical values from multiple tags in a single operation.
tags in
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
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.
error in
next
window
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
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
values
Historical data values of the tag(s).
end of
data?
end of
data?
Boolean that indicates whether the node read the last of the data for the tag.
error out