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Parameterization and configuration
8.3.2 Parameter access and initialization
Figure 6 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. This is a function
according to Encoder Profile 4.2 and is only supported by measuring systems as of software version
2.5.0.
Figure 6: 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 parameters" from Page 119. 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 127. 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 139.
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 initialization controller, see Page 125.
Access to the PNU 65005 initialization controller is possible both via the parameter data block (if
enabled) and an acyclic parameter access, and is therefore always adjustable, irrespective of the
initialization setting.
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