User Manual

Data storage
Data categories
13
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13 Data storage
Large volumes of data are created in the Desigo system during engineering,
commissioning and plant operation. The data is processed, saved, and archived
as needed in accordance with type, generation, and meaning in the various
system components.
13.1 Data categories
The application logic (control functions) and the required setting and
configuration data are processed during engineering and loaded in the
corresponding system products, such as Desigo CC or an automation station
during commissioning.
This data is arranged according to two criteria:
● Data category
● Data ownership
Data categories: A common method of classifying data in
building automation and control systems
Data category Description Related terms
Program elements Software components which perform a predefined task
and have a known interface.
Function blocks, functions, program
blocks, compounds, solutions
Setting parameters Values that affect the program elements. Setpoints, default values, limit
values, address settings
Configuration parameters Data in the form of defined constants, or data that
influences the appearance or operability of the plant.
Description data, templates, profile,
metadata
Process data Physical process variables of the plant during operation.
History or saved process data are plant data.
Measured values, state variables,
calculated values
Data ownership
Data ownership is based on the practical allocation of data to its owner. The
owner, usually an organizational entity, a person, or a group of people, checks
the data and is responsible for its scope and content. Data ownership shows in
which Desigo system product the data is located and which tools are available
for its management. Data ownership is divided in four groups.
The following table shows the four data ownership groups.
Data ownership Description Owner User
Program data Software of a Desigo system product with
basic data blocks.
Research & Development
(R&D) (HQ)
Project/Library engineer
Libraries Collection of predefined, specific, and
tested program elements.
Libraries can be copied and customized.
Library manager (HQ/RC) Project/Library engineer
Project data All data for the customer project or
customer plant.
Contractor
Project engineer
Plant operator
Plant data Data from the customer plant saved
permanently following commissioning.
Plant operator Customer
13.2 Program data
The executable software of a Desigo component is composed of programs.
There are system and product components.
System components are:System components