On the PDA or the Item Scanners, planogram location will read Aisle## (?) *-*-* (Section#-Shelf#-ShelfPosition#). The (?) is a good indicator if it will be on the aisle, endcap, or on a special peg hook.
Ex. If an item comes up A10 3-5-2. The item is located down on the A10 aisle, 3rd 6' section from the main aisle, 5th shelf up, and around the 2 item on the shelf. Planogram isn't 100% accurate. Some planogram numbering can crossover to the adjancent aisle or may be in reverse. But it will get you fairly close.
Once you learn plaogram, and get the zoning process, you will pretty much start knowing where items go without scanning them.
If you get a weird (99) or something else, it usually like a encap or special display.