【文章內(nèi)容簡介】 s of your warehouseSince zone logic only designates an area, you will need to bine this with some other type of logic to determine exact location within the zone Fixed LocationLogic uses predetermined fixed locations per item in picking, put away, and replenishmentFixed locations are most often used as the primary picking location in piece pick and casepick operations, however, they can also be used for secondary storage Random LocationSince puters cannot be truly random nor would you want them to be the term random location is a little misleadingRandom locations generally refer to areas where products are not stored in designated fixed locationsLike zone logic, you will need some additional logic to determine exact locations Firstinfirstout FIFODirects picking from the oldest inventory first Lastinfirstout LIFOOpposite of FIFO. I didn39。t think there were any real applications for this logic until a visitor to my site sent an describing their operation that distributes perishable goods domestically and overseas. They use LIFO for their overseas customers because of longer intransit times and FIFO for their domestic customers PicktoclearLogic directs picking to the locations with the smallest quantities on handThis logic is great for space utilization Reserved LocationsThis is used when you want to predetermine specific locations to put away to or pick fromAn application for reserved locations would be crossdocking, where you may specify certain quantities of an inbound shipment be moved to specific outbound staging locations or directly to an awaiting outbound trailer imize CubeCube logic is found in most WMS systems however it is seldom usedCube logic basically uses unit dimensions to calculate cube cubic inches per unit and then pares this to the cube capacity of the location to determine how much will fitNow if the units are capable of being stacked into the location in a manner that fills every cubic inch of space in the location, cube logic will workSince this rarely happens in the real world, cube logic tends to be impractical ConsolidateLooks to see if there is already a location with the same product stored in it with available capacityMay also create additional moves to consolidate like product stored in multiple locations Lot SequenceUsed for picking or replenishment, this will use the lot number or lot date to determine locations to pick from or replenish from It’s very mon to bine multiple logic methods to determine the best locationFor example you may chose to use picktoclear logic within firstinfirstout logic when there are multiple locations with the same receipt dateYou also may change the logic based upon current workloadDuring busy periods you may chose logic that optimizes productivity while during slower periods you switch to logic that optimizes space utilizationOther Functionality/Considerations Wave Picking/Batch Picking/Zone PickingSupport for various picking methods varies from one system to anotherIn highvolume fulfillment operations, picking logic can be a critical factor in WMS selection. See my article on Order Picking for more info on these methods Task InterleavingTask interleaving describes functionality that mixes dissimilar tasks such as picking and put away to obtain imum productivityUsed primarily in fullpalletload operations, task interleaving will direct a lift truck operator to put away a pallet on his/her way to the next pickIn large warehouses this can greatly reduce travel time, not only increasing productivity, but also reducing wear on the lift trucks and saving on energy costs by reducing lift truck fuel c