User Manual

Data storage
Plant data
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● The PX automation station must be connected and available (online).
● The PX automation station must support backup and restore.
● The building automation and control system must work smoothly.
You can restore data backed up on Desigo CC to the corresponding PX
automation stations. The restored PX automation station automatically restarts
after data restoration.
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.
There are four transfer operations for data synchronization:
● Offline generation
● Online loading
● Online readback
● Offline import
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.
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:
● 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 (converts only the modifications):
Restore
Transfer operations
Data transfer to PX
automation stations
Data transfer to Desigo
room automation
stations
Full code generation
Delta generation