January 2012 6.16 The Control Loop 835
The following formula can be used to calculate a proposed value for
MP_axPathJerk. The formula is conceived for the calculated jerk to be large
enough that the acceleration of the axis is not impaired.
MP_axPathJerk
Axis-specific maximum jerk on path contours
Available from NCK software version: 597 110-04.
Format: Numerical value
Input: 0 to 1 000 000 [m/s
3
]
Default: No value, parameter optional
Access: LEVEL3
Reaction: RUN
MP_axPathJerkHi
Axis-specific maximum jerk during rapid traverse
Format: Numerical value
Input: 0 to 1 000 000 [m/s
3
]
Default: No value, parameter optional
Access: LEVEL3
Reaction: RUN
MP_axPathJerk ≥
MP_maxAcceleration
2
· 60000
MP_rapidFeed
HEIDENHAIN recommends entering the permissible jerk for each axis in
MP_axPathJerk and MP_axPathJerkHi. This way the jerk is based on the
weakest axis participating in a motion.
Please also note the guideline on setting the nominal position value filters
and the look-ahead starting on page XXX.
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