A device for automating and/or controlling machine tools or production machines is described. The device includes at least one computer which is located remote from a machine. The computer operates like a handheld controller and is connected via at least one bus system, which can be wired or wireless, with each machine for unidirectionally or bidirectionally transmitting data and control signals. All control functions of the machine are integrated in the remote controller. This device can automate and/or control machine tools and production machines in a simple and cost-effective manner.