OPC UA based Universal Edge Gateway for Legacy Equipment The objective of this study was to propose universal edge gateway that can transfer information of various legacy equipment conveniently and cost effectively to IT system for smart factory. The proposed universal edge gateway converts information from various legacy equipment used at the manufacturing site to OPC UA protocol. Also, ISA 95 information model was applied to realize the same equipment interface for all IT systems, including MES and ERP. It also includes hardware that can connect additional sensors, required for legacy equipment and configuration tools that allow operators to use simple gateways without modifying the equipment. As a result, in IT systems, it is possible to access the information of legacy equipment easily with the same interface, and to reduce the cost and time for building smart factory.

Towards an OPC UA Compliant Programming Approach with Formal Model of Computation for Dynamic Reconfigurable Automation Systems This paper proposes Service Oriented SystemJ xe2x80x93 OPC UA (SOSJ  OPC UA), a serviceoriented programming approach which targets dynamic industrial manufacturing systems. An extension of SOSJ, SOSJ  OPC UA utilizes OPC UA standard to introduce service orientation, enable interoperability with different actors in the systems, and compliance with Reference Architecture Model for Industrie 4.0 (RAMI 4.0) which defines OPC UA as the communication standard. The paper begins by describing new concept on the synergy of SOSJ and OPC UA. Then, SOA information exchange mechanisms which utilize OPC UA are defined that enable parties to find each other. SOSJ xe2x80x93 OPC UA is then demonstrated in a simple manufacturing example to demonstrate its capability.