Autorun Without Pallet Program

[[Th...]]

Can anyone explain the purpose of a pallet program for autorun. The company I'm currently working for tends to lean on a lot on autorun, something I'm not too familiar with but I have created autoruns for different part numbers and I have been able to get away with not making a pallet program. Typically, I would set the pallet program the same as the measurement program and just add in the X and Y part to part distance values. I haven't had any issues doing it this way.

Surely there is a reason why there needs to be a pallet program that I am not seeing   

[[Ri...]]

Because typically the singular part that the initial Base Alignment is built off of is relatively small in comparison to the size of the entire pallet. The Pallet Alignment helps keep the Base Alignment square to the pallet itself, so that every time it offsets the Base Alignment for the pallet it isn't compounding any projection error. 

Edited October 16

[[Ma...]]

I will add my opinion.

You are using autorun just for avoiding any program modifications and easier finding measuring program.

Using program instead of pallet -> just for one part - header info is loaded from previous run.
Using pallet even for single part ( nest ) -> header info is stored in autorun file, so any changes are reverted back to stored state.

Example: one program for two parts, like mirrored or minor differences but base system is the same. Both have different part number, marking and so on, so you can keep that info stable.