![]() In addition to local archiving on a WinCC server, additional central long-term archiving can be implemented with the SIMATIC Process Historian option For reasons of traceability, these values are marked as "modified manually" and the process is documented with an operation message. This is required, for example, for laboratory values in some industries. In addition to automatic archiving, it is possible to add values manually to the archive or to modify archive values later with the appropriate authorization. day, month, year) and saved in compression archives. To do so, the maximum value, minimum value or (weighted) mean, the sum or the difference is calculated for adjustable periods of time (e.g. To reduce the amount of data for long-term archiving, the data can be compressed even further. Historical process information is saved as WinCC process value archives in the integrated, high-performance SQL database.ĥ00 archive tags are already licensed in the WinCC basic system this number can be increased at any time through additive PowerPacks. ![]()
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