Pressbrake CNC Control Setup Questions

Could you add a plot of the commanded position?
Does the PID component have index-enable connected?

What is supposed to happen on homing to index is that the when index is
detected, the encoder position is set to 0.0 and index-enable is set false.
LinuxCNC watches the index-enable signal, and when it has a high to low transition,
it sets the commanded position to 0.0 to match the feedback position.

In addition, the PID component watches index enable so that any derivative
or feed-forward term calculations ignore the position step in its commanded and
feedback inputs.

it looks like pid.1.index-enable is false before getting to the index.

 

are the pid connections wrong in the hal file? 



i'll do some more testing.

more testing: consistently pid.1.index-enable goes false, but pid.1.command does not set to 0.

 

Ok, I did some testing.
Backstop axis: If I starting homing with the home switch true, It moves at search velocity towards positive.
When it moves off home switch true and at the first index it does a very rapid jerk and proceeds with homing and completes homing. (Homing in the opposite direction resulted in a fast rapid move toward positive end of travel, not good!)
Screen Shot:
 
Also this last change causes the position after homing to be 0 right at the index, not at the point of index + home offset.

if this doesn't work, then try setting the axis home positions to zero ( the press.axis.1.home-offset 50 line) just to see what changes.

If I set it to zero homing doesn't work.
I'll keep doing more testing on my end to see if I can give you more info.
Thanks,
EW