Communication protocol between the electronic devices to control and diagnostics of a photovoltaic system the CANopen communication protocol, defines all necessary data, specifies the communication between electronic devices and allows the control and Diagnostics in a photovoltaic system. The communication standard developed by CiA, an interchangeability is achieved for the first time devices with same functionality via plug and-play functionality. Thus, manufacturers can supply the growing market with standardized interfaces faster and more cost-effectively. CAN-based communication solutions offer great benefits with a cost effective usage in small and large photovoltaic systems and find a wide distribution, also in other areas such as in the automotive industry. The CANopen seminar in photovoltaic applications”represented the structure, functioning, the usage as well as the benefits through the use of standardized communication profiles. It is addressed to Decision makers, developers, system integrators and component manufacturers (controllers, inverters, Installating – and monitoring systems, sensors etc.) from the photovoltaic industry. CANopen in photovoltaic applications”- operation and use of the application profile (CiA 437) for photovoltaic power systems, will take place on January 18, 2010 in 2009 the Haus der Technik in Munich. For details and registration see: htd/events /…