Correction Values and Laboratory Values

These panels can be used to change existing values (=correct), query values from and add new values too the HistoryDB and RDB.

This can become necessary, for instance, if a sensor is found to be faulty and produces incorrect readings. In this case, you can post-correct the measurements log (for example, by using data from another measurement or estimated values).

In the Laboratory Values panel you can, as in the Correction Value panel, enter, edit and read out data that has been saved in the historical database. The difference is that the Laboratory Values panel has been designed specifically for manual input, that is, for measurements that do not enter the WinCC OA system through a peripheral interface, but are entered by hand such as readings that have been taken in a laboratory.

The Laboratory Values panel only displays those data point types and data points that have a function "Man" (for "manual input") in the first compression level C1. This is the case if the "MAN" function has been enabled instead of statistical functions in the compression settings for the corresponding data point type or data point (see Archiving and Compression).

If necessary please look again at the following chapters: Archiving, HistoryDB and Archiving/Compression.