Setting axis MAX_LIMIT and/or MIN_LIMIT after startup???

HI
We are running a Pfauter CNC gear hobbing machine that was recently retrofitted with LCNC, running AXIS.

Depending on the helix angle of the gear being cut and the hob lead angle, the A axis needs to be set at a certain angle. This axis is set up as a locking indexer. If this angle is between 0 and 180 degrees, the Z axis can travel along its entire length as determined by the hard limits and soft limits (set to be approx. 5mm away from the hard limit).

When the A axis is set to angles >0 deg and smaller than 180 deg I would like to change the Zaxis MIN_LIMIT accordingly and I'm not sure if that is possible.



Any suggestions are welcome.

Thanks
Henk

Thanks Andy, I will have a look. Will probably have to write a component to set the min limit before A-axis moves are executed.
Will keep you posted

Thanks
Henk

HI Andy
Lincurve works great, thanks.

The out pin from lincurve needs to be connected in the postgui hal file as it seems that it is not yet available when this is done in the main hal file, no problem there.

One thing that I have not figured out yet is where to get the A axis position from. The encoders start counting as soon as the axes are enabled and the home sequence starts and therefore are not always the same, depending on what position the machine was left when switched off the last time. Because of this, I cannot use the A axis encoder position as an input to the lincurve component. I have tested the functionality for now by using M68 E03 Q #<A-axis position> from MDI or from the .ngc file that moves the Aaxis.

Not sure if there is a better way using a pin already available in hal? The motor position cmd and the encoder position in hal for that axis does not have offsets (home and work offset) applied to them, so therefore can vary depending on the distance to the home position as determined by the homing sequence.

Thanks
Henk

That is what i was looking for!
Thanks Andy.