Control flags

Parameterization

Jerk limiting at tangential block transitions can be activated via the P-CHAN-00009 parameter. Returning takes place at tangential transitions between two circles with different radii or between a circle and a linear block, for instance.

Excerpt from the channel parameter list:

corr_v_trans_jerk    1

The mentioned parameter above is effective only in conjunction with the jerk-limited acceleration profile.

With parameter P-CHAN-00110the jerk limiting in polynomial blocks can be activated. For circular blocks the jerk limiting is always active with nonlinear slope profile. Polynomial blocks are generated with active polynomial contouring, spline, and HSC functions.

Excerpt from the channel parameter list:

check_jerk_on_poly_path    1

The braking mode of the CNC when feed stop is activated is selected by means of the P-CHAN-00097 parameter. When the flag is set, the feed hold parameter block is used for the braking operation, i.e. braking is possible with higher acceleration than when part machining or positioning is active.

Excerpt from the channel parameter list:

use_drive_curr_limit    1

Corresponding to the descriptions for the jerk-limited acceleration profile, you must pay attention to the following:

• Increasing the deceleration values with constant jerk does not yet lead automatically to a shorter braking distance. In the case of the jerk-limited profile, this also depends on the ramp time and the speed difference to be decreased. The borderline case is described in Chapter ”Jerk-limited standard acceleration profile”.