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Steps for creating historical trends in IFIX and methods for troubleshooting errors related to historical trends: http://yunrun.com.cn/tech/2552.html IFIX is a powerful host computer software that enables easy viewing of historical data trends as well as the creation of reports. In this article, Changhui Instruments will discuss with you the steps for creating historical trends in IFIX5.9, as well as methods for troubleshooting errors related to historical trends. IFIX Trend Creation: 1. Install the traditional IFIX database and change its type to a traditional database. http://yunrun.com.cn/upload/201906/20/201906201610061714.png http://yunrun.com.cn/upload/201906/20/201906201611133927.png 2. Add HTC tasks to the XT configuration. 3. Start the HTC task in the workspace. http://yunrun.com.cn/upload/201906/20/201906201617278896.png 4. Add the required tags in the historical database definition. http://yunrun.com.cn/upload/201906/20/201906201632258349.png 5. Create the visuals and scripts on IFIX. http://yunrun.com.cn/upload/201906/20/201906201632391512.png Method for quickly viewing trends with IFIX: In the analog point animation settings, select the relevant option; thereafter, the quick trend for that point can be viewed directly on the operation screen. http://yunrun.com.cn/upload/201906/20/201906201717562306.png IFIX historical trend troubleshooting: Often, there are issues with the proper display of trends. As can be seen from the trend charts, there are various types of problems, such as the disappearance of data signals, failure to execute HTC tasks, definition errors, HTC overload, and so on. Industrial control field issues are complex and chaotic, requiring careful investigation. 1. Newly added trend points are not displayed; it is necessary to add such definition points in the historical database settings. 2. Points that could be displayed normally before suddenly stop showing. At this point, it is important to pay close attention to task control to check whether the HTC tasks are overloaded. 3. Make flexible use of the IFIX and THISNODE node names. Author: Jiang Dacheng