1. A method of controlling automated devices connected in an automated system in which a plurality of automated program-controlled devices are connected to one another and have operations cooperatively controlled, comprising the steps: inputting a program written in a unified language which has a unified format for all connected automated devices; translating said inputted program into a corresponding program for each of the connected automated devices in accordance with a combination of said connected automated devices; and practicing the controlling of said automated devices on the basis of said corresponding program for each of the connected automated devices.