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My toolchange uses two custom hydraulic rams in top z position to release the tool.
They are leaking and I am not sure if I can fix them. An alternative would be to make them fixed and move Z up to release the tool. 
But this has to be avoided during normal usage.
The reference switch is at the end of the tool change travel. So I could use this as a combined end and reference switch.
But I would need to be able to move over this point for toolchange. 
Is ip possible to set something like this up?

Thanks Patrick