Parameterization and configuration
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6.2.2 Parameter access and initialization
Figure 12 shows the parameter database of the measurement system and the mechanism by which
the parameter database obtains its parameter data in the startup or initialization phase.
Figure 12: Parameter access and initialization (simplified functional representation)
In the default setting, the measuring system uses a configuration tool to obtain its parameters from the
parameter data block, see Chapter “Configurable module-related parameters” from Page 43.
Parameter changes therefore always require a restart of the measuring system to become effective.
However, if parameters must be changed during operation, parameters can also be accessed after
the startup phase via an acyclic read/write request, see Chapter “Acyclic parameter access (Base
Mode Parameter Access - Local)” on Page 53. However, changed parameters are not saved
permanently and must be saved to the non-volatile RAM area of the measuring system via parameter
PNU 971 = 1, see Page 66.
To ensure that the measuring system receives the changed parameters from the non-volatile RAM
area at the next restart, the parameter initialization must be switched over to the non-volatile RAM
using the PNU 65005 initialisation controller, see Page 45.
Access to the PNU 65005 initialization controller is possible both via the parameter data block (if
enabled) and anacyclic parameter access, and is therefore always adjustable, irrespective of the
initialization setting.
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