Device and method for planning a production unit

A device for planning a production unit with a production building and a manufacturing facility, wherein the manufacturing facility has machines with equipment for automation systems integrated at least partially in a communication network, wherein the device has a product data management system, in which data relating to the product to be manufactured and further manufacture-related data is stored in a database and with planning tools that are called up from a planning platform which allow at least partially virtual mapping of the product, the production building and the manufacturing facility by accessing the database, a network planning tool for the communication network being integrated in the planning platform, data characterizing the communication network being available based upon the product data management system.