From acquisition to reporting – the data flow for dynamic reporting with zenon, as used in ISO 50001 energy management (part 2: Data Archiving)

In the preceeding part we discussed the possibilities for data acquisition with zenon. Now let´s assume that the desired variables are available in the zenon Runtime context. A number of data processing, visualization and control features can be utilized in the context of ISO 50001 energy management. For example, variable values can be pre-processed and limited, automatically scaled or monitored. Respective violations and inconsistencies are captured and – if desired – trigger specific reactions, such as control interventions, warnings or alarm messages.

One particularly important task with respect to ISO 50001 energy management and the related reporting is data archiving.

ISO 50001 Overview

Organize and retain your data

In zenon, data archives can be composed freely from any number of type-independent variables (i.e. binary, numerical, string). Values can be stored on change, cyclically or on event. System functions to activate and deactivate logging allow further customization of the archiving system; for instance, to use it in batch-oriented production environments.

Another important feature is the flexible creation of archive structures. Hence, in zenon, data from central archives can be automatically transferred to other archives. This facilitates data aggregation from archives with high frequency granularity into summary or trend archives.

Archive Cascading Example

The archiving mechanisms of zenon are transparently integrated into the overall data flow of an application. Thus, archive data – no matter if it is kept locally in files, on hard-disk or remotely on an SQL server – remains accessible for zenon´s functional modules, e.g. trend visualization or event parsing. Moreover, the archiving features fully comply with zenon´s redundancy standards and are protected against data consistency issues or unauthorized access. Exporting data into open formats such as XML, CSV or dBase is possible for any archive.

Exploit your data

zenon Analyzer is able to access these archives directly and to generate reports from the historic data, utilizing various filtering and data aggregation features. In the next post we will explore this in more detail.

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