Automatic Configuration of OPC UA for Industrial Internet of Things Environments Gutiérrez Guerrero, José Miguel Holgado Terriza, Juan Antonio Auto-configuration Internet of Things OPC UA This work has been funded partially by the Software Engineering Department of the University of Granada. We would like to acknowledge the participation of Dzmitry Basalai in this research paper for his helping in the elaboration of the prototype carried out in this work Software technologies play an increasingly significant role in industrial environments, especially for the adoption of Industrial Internet of Things (IIoT). In this context, the application of mechanisms for the auto-configuration of industrial systems may be relevant for reducing human errors and costs in terms of time and money, improving the maintenance and the quality control. OPC UA (OLE for Process Control Unified Architecture) systems are usually integrated into an industrial system to provide a standard way for setting a secure and reliable data exchange between industrial devices of multiple vendors and software systems. In this paper, a novel mechanism for the auto-configuration of OPC UA systems is proposed from an initial setup of industrial devices interconnected to a basic Ethernet network. The auto-configuration of the OPC UA is self-managed over the TCP/IP protocol. This mechanism allows automating the configuration process of the OPC UA server automatically from the programmable logic controller (PLC) devices connected to a basic Ethernet network. Once the PLC devices are identified, they exchange information directly with OPC using a Modbus protocol over the same Ethernet network. To test the feasibility of this approach, a case study is prepared and evaluated. 2020-05-15T11:10:56Z 2020-05-15T11:10:56Z 2019-05-29 journal article Gutierrez-Guerrero, J.M.; Holgado-Terriza, J.A. Automatic Configuration of OPC UA for Industrial Internet of Things Environments. Electronics 2019, 8, 600. [doi:10.3390/electronics8060600] http://hdl.handle.net/10481/62098 10.3390/electronics8060600 eng http://creativecommons.org/licenses/by/3.0/es/ open access Atribución 3.0 España MDPI