National Institute of Technology, Tsuruoka CollegeTitle –
The manufacturing industry is undergoing a rapid trend toward digitalization. As a result, information and manufacturing systems are integrated into today's industrial systems. In this context, damage caused by cyber-attacks has become apparent, and cyber-attacks on factories are on the rise domestically and internationally. As a result, there is an increasing need for cybersecurity measures and education in the manufacturing industry and factories.
The industrial automation industry has begun to develop designs with virtual commissioning based on digital twin models, and all of these development tasks are increasingly conducted in virtual space. However, no security education materials based on these technologies utilize cyber-physical space (CPS), which is free from time and space.
Therefore, in this study, we create a model that moves in a virtual space similar to that of the actual experimental equipment. These models can be configured as a simple digital twin of the experimental equipment that also exists in real space and can be linked to experiments and practical training using actual equipment as before. An environment will be created in which these models can be operated and exercised in a virtual space.
The models can control pressure and water level at the same time with control exercise equipment at NIT KOSEN Yonago College. The entire plant, including the pressure and water tank, will be modeled on a process simulator (Siemens SIMIT), and the controller (PLC) will be virtualized.
When experiments and practical training are conducted in a distance education environment using digital twin technology, the same educational effects can be expected as with conventional investigations and practical training using actual equipment. In addition, by combining experiments and practical training using existing equipment with extensive use of modeling and the distance education environment, it is possible to expand into large-scale, complex, and diverse fields that were previously unfeasible due to many constraints (space, cost, human resources, etc.), and to safely conduct practical cyber security exercises The new system also allows for safe and practical cyber security exercises to be undertaken.
In the manufacturing industry, the trend toward digitalization is progressing rapidly. As a result, information and manufacturing systems are being integrated to realize Industry 4.0 and DX(Digital Transformation). However, in the midst of this trend, damage caused by cyber-attacks has become more apparent, and cyber-attacks are on the rise. As a result, there is an increasing need for cybersecurity measures and education in the manufacturing industry and factories.The Purdue model used for modeling industrial control systems represents the system hierarchically as follows:
1. ERP (Enterprise Resource Program): Management level [L4]
2. MES (Manufacturing Execution System): Planning level [L3]
3. SCADA (Supervisory Control and Data Acquisition): Supervisory level [L2]
4. PLC (Programmable Logic Controller)/DCS (Distributed Control System): Control level [L1 ]
5. Production Process: Field level [L0]
From the information technology perspective in operation, levels Two to Four can be classified as IT (Information Technology) and levels Zero to Two as OT (Operational Technology).The current production system is in the direction of being networked vertically and horizontally. In particular, the realization of Industry 4.0 and the utilization of IIoT(Industrial Internet of Things) require communication across hierarchical levels.Many technical colleges use stand-alone PLCs (not networked) for exercises. Unfortunately, this situation is also insufficient for pre-Industrory 4.0 production systems.Therefore, we will introduce a case study of upgrading control system exercises using Omron PLCs, which have been introduced in many cases at KOSEN. Specifically, examples and configurations of PLCs connected by Fieldbus (RS485, RS232C) and Ethernet will be presented to realize system network support. Next, we will offer a case study of IIoT support by connecting Node-Red to a controller. Finally, a cyber security exercise environment and educational materials for ICS will be developed by taking advantage of Omron PLC's features that allow multiple industrial protocols (Modbus, FINS, OPC UA) to be used