In industrial interdisciplinary projects where engineers of different sorts have to work together, a framework is necessary in order to support such an interdisciplinary development process. For example, the design information created by the production automation engineer has to be set into relation to the software architecture the software designer has to produce which will control the automation plant. Such requirements result in the need to correctly and consistently integrate various specification methods and development processes applied during the development. This contribution focuses on an approach to a correct and consistent integration of different design notations playing an important role in the development process of production automation systems. The integration of heterogenous specification methods concerning the various heterogenous components of such production automation systems can be achieved by using the ViewPoint framework. This framework provides an intuitive understanding of different specifications involved in the development process, on the one side. On the other side the ViewPoint framework allows for a consistent and correct integration of these specification methods due to its existing formalization by distributed graph transformations.