Accessing Historical Tag Values from Other ApplicationsSave PDFSave selected topicSave selected topic and subtopicsSave all topicsShareShare to emailCopy topic URLLast UpdatedJun 16, 2021HMI and SCADASystem PlatformInTouch HMI 2023 Related LinksAbout Accessing Historical Tag Values from Other InTouch ApplicationsUsing DDE Items to Show Historical DataAccessing Log Data with DDEAccessing Historical Data from Other ApplicationsTroubleshooting HistData Errors