Working with Array Tags Using Excel Add-In

Historian allows you to store a set of values with a single timestamp and then read the elements back individually or as an array tag. In Historian, we can modify a tag to an array tag by specifying the NumberOfElements as -1. Where NumberOfElements indicates the tag is an array tag. If the NumberOfElements is -1, then the tag is an array tag.

Tags with zero NumberOfElements are not array tags. Since the size of the array is dynamic there is no single number of elements that can be returned. In Excel Add-in each element of the array tag is displayed in separate rows with tagname with index (Tag-name[]) and values. You can perform all operations that you use for a tag on an Array tag. You can export, import and query an array tag or an array element.