Thank you Al,
I can change the clamp via the key switch to internal or external. That in turn reverses the commands. M68 now opens the collet and cancels itself. M69 on the other hand will not cancel. So, what ever it's waiting for is unknown as the problem changes

What manuals in the list do you recommend, what will I get the most bang for the buck out of? Besides the operators manual and programming manual because they are already on the way.

Thanks again,
Dave