HEIDENHAIN MANUALplus 620 Technical Manual page 72

72
Enhanced: Nominal position value filters
The nominal position value filters were thoroughly revised and optimized.
Overview of the most important improvements:
• For each axis the filter parameters are now only for the filter shape
(MP_shape) and the frequency (MP_frequency).
• New machine parameter: MP_hscMode. The HSC modes "smoothing"
(optimum filter for finishing) and "roughing" (optimum filter for roughing)
can be set for the HSC filter.
• Now default filters are defined in the configuration object CfgFilter.
These filters apply for those axes that have no individual setting in the
CfgPositionFilter configuration object.
• All machine parameters in CfgPositionFilter are optional now. The
settings of CfgFilter are automatically adopted if no values are defined
in CfgPositionFilter.
• Now explicit parameter designations distinguish between position
filters and cutter location filters (for rotary axes).
• The optional machine parameters maxTransAcc and
MP_maxTransAccHi (CfgLaPath) are now available in order to limit
radial accelerations. The new parameters are generally in effect for
curved paths such as free-form surface and circle machining. The axis
acceleration in MP_maxAcceleration (CfgFeedLimits) is not exceeded,
regardless of the setting in the two parameters.
• If MP_maxG1Feed (CfgLaPath) is set to the value 0, the dynamically
lower settings (i.e. no HIGH parameters) are now in effect for all feed
rates (even FMAX). Example: MP_pathTolerance is also effective
during rapid traverse, and not MP_pathToleranceHi.
Note
During a software update, the configuration of the nominal position value
filters is automatically adapted to the new parameters. This can result in
slight changes in the filter frequency due to the optimization of the HSC
filters. However, the behavior of the machine remains unchanged. The old
HSC filters can also be replaced by the new advanced HSC filters.
Important note:
The automatic adaptation of the filter configuration can only take place if all
filter settings correspond to NC software version 548 328-03. If many axes
have the same filter settings, the values will automatically be saved as
default setting in CfgFilter.
Note
Please also note other information on the new nominal position value filters
given in this Technical Manual:
For a comprehensive description of the new nominal position value
filters, see "Nominal position value filter" on page 811.
A guideline for setting the new nominal position value filters and the look-
ahead parameters is provided in "Configuring the nominal position value
filter and look-ahead parameters" on page 1124.
HEIDENHAIN Technical Manual MANUALplus 620