tagnameSave PDFSave selected topicSave selected topic and subtopicsSave all topicsShareShare to emailCopy topic URLLast UpdatedNov 12, 20191 minute readHMI and SCADASystem PlatformHistorian 2023 R2 SP1 P03 A tagname is the name assigned to an elemental variable in the AVEVA Historian database (a tag). Related LinksGlossary