HEIDENHAIN MANUALPLUS 620 - Page 819

January 2012 6.16 The Control Loop 819
MP_handwheelFiltOrder
Axis-specific order of the mean-value filter in the El. Handwheel
operating mode
Available from NCK software version: 597 110-05.
Format: Numerical value
Input: 1 to 251
Only odd integers are permitted input values! If you enter an
even number, the MANUALplus 620 displays an error message.
Default: No value, parameter optional
Access: LEVEL3
Reaction: RUN
Configuration of
the nominal
position value
filters up to NCK
software version
597 110-04
Global settings of
the nominal
position value
filters
Two filters are located before the position control loop to prevent the machine
from oscillating.
 MP_typeFilter1 only affects rotary axes. This filter is usually not required
for lathes. In this case you can enter "off" for the parameter.
 MP_typeFilter2 only affects linear axes.
With MP_orderFilter1 and MP_orderFilter2 you define the global order of the
filter. Then you define for each axis whether a filter is used and which filter is
used to optimize the axis. In addition, the frequency of the filter is defined axis-
specifically.
The smoothing function of these filters causes contour errors. The velocity
profile is adjusted by the look-ahead function so that the contour error does
not exceed the given tolerance (see "Look-ahead" on page 825).
Settings in the configuration editor MP number
System
CfgFilter
typeFilter1
orderFilter1
typeFilter2
orderFilter2
100401
100402
100403
100404
Axes
ParameterSets
[Key name of the parameter set]
CfgPositionFilter
filter1Shape
filter2LimitFreq
filter2Shape
filter2LimitFreq
401601
401602
401603
401604
Note
Filters delay the processing time of NC blocks by the control, since multiple
NC blocks must be considered for the filter functions.