Delete the data in the project name \PED\ directly, and then run WINCC to regenerate the historical data. The reason may be data storage error.

WinCC online trend control is unique and can only be used in WinCC. In other environments, data sources and data source formats are not open to the public, so they cannot be used independently.

Only third-party trend controls can be used to load the exported data and then render the curve. Additional programming is required.