User Manual

Data storage
Plant data
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13.5 Plant data
Plant data is process data from the operation of a customer plant, that is permanently saved from the time
of commissioning. Process data represents process variables in a building. The data is continuously
changed by the environment, automation station and, in the event of physical outputs, the operator. Most
process data is volatile. Few process data, such as adaptive control parameters and runtime totalization
counts, remains available following a restart or power failure of the automation station. Process data can
be archived as plant data.
13.6 Data transfer processes
Project data is transferred from the tools to the devices or other consumers online and offline via the
system interface. PX automation stations are configured offline and then the data is downloaded onto the
automation station. Desigo room automation stations (PXC3 and DXR2) can be engineered. DXR2
automation stations also have preloaded applications and only need to be configured.
Transfer operations
There are four transfer operations for data synchronization:
● Offline generation
● Online loading
● Online readback
● Offline import
Data transfer to PX automation stations
You can load a new program on a PX automation station while the old program is still running. The
operation of the automation station is not interrupted. Process values remain intact. If you load a firmware
on the automation station, you must restart the automation station.
Data transfer to Desigo room automation stations
If you load a new program on a Desigo room automation station, you must restart the automation station.
The operation of the automation station is interrupted. Process values do not remain intact. If you load a
firmware on the automation station, you must restart the automation station.
There are four loading units for Desigo room automation stations:
● Load program
● Load parameters (full download for DXR automation stations)
● Load configuration (settings on the automation station)
● Load firmware (programs, parameters and configuration are not lost)
Offline generation
Full code generation
Full code generation:
● Checks the overall application consistency (limits, identifiers)
● Converts the application into loadable units
● Generates the appropriate description data for configuration
You must compile the code to get the required performance. You cannot engineer a compiled program.
Delta generation
Delta generation (converts only the modifications):
● Improves performance
● Is faster than full code generation
Online loading
Full download
The full download transfers all loadable units into the automation station.
Delta download
The delta download: