For unmanned cable connection of rotary tables in pallet pools, Autocoupler attaches on one side to center post of HMC, outside of harsh chip/coolant environment. Other side mounts to back of table. Guide pin on coupler installed to machine tool ensures precision mating of halves as well as electrical and pneumatic connection between machine tool and table. Machine tool's PLC recognizes presence of automatic as opposed to manual coupling, and senses pallet delivery. Device accommodates pallets 400 mm and up.