SIMATIC WinCC Open Architecture Forum

Dear All,

I am using the Logarithmic option in trend configuration and I am getting an entry on the log viewer saying that value in logarithmic trend must be zero, after opening the trend this entry is coming continuously, please let me know where I have made mistake, for the more information please look into the attached image file.

In a logarithmic trend, all values you feed into the curve (either via script or coming from a DPE) must be greater than 0.
It seems this is not the case here, therefore the warning.