Using semantic communication technologies in production environments would facilitate setting up machine-to-machine communication and would consequently improve the flexibility and expandability of manufacturing systems. Today, flexible manufacturing cells are usually preconfigured, often available commercially off-the-shelf for a specific type of processing. Therefore a lot of effort and specialized knowledge is required for their reconfiguration. Communication between the components of a manufacturing cell is still mostly based on binary input and outputs of a programmable logic controller (PLC) or (proprietary) bus systems. Hence the communication is controlled by the PLC of a machine or by an I/O-module of a central computer supervising the cell. OPC Unified Architecture (OPC UA) is a promising standardized specification for communication in the field of modern automation technologies. It is the most recent specification by the OPC Foundation, and stands out due to its platform-independence, scalability and extensibility. What makes OPC UA unique as a communication technology is its powerful capability of exposing semantics of provided data. In other words, the server can present data and services highly enriched with their meanings. By now, several software development kits (SDKs) exist, that facilitate easy programming of OPC UA applications. In this thesis the development of an OPC UA Server for the lathe -Emco Concept Turn 55- is described. The lathe is planned to be used as a component of a flexible manufacturing cell. The server should therefore offer specific services and information to the cell controller, hence enabling the cell controller to orchestrate the automatic operation of tasks on the lathe. An existing OPC UA Client was also extended with a simple sequence control to demonstrate automatic operation of the cell using OPC UA communication. For this development, SDKs provided by -Unified Automation- were used.