Strictly hierarchical communication is usually found in industrial systems. A control system communicates with a programmable logic controller (PLC), which itself controls actuators. However, developments such as EthernetAPL, Industrial Control as a Service and modularization mean that systems are becoming increasingly complex and use more powerful protocols. This poses a challenge for communication in such systems, for example with regard to the management of digital certificates.

Based on a system that uses a combination of OPC UA and PROFINET, the effects of using an overlay network for the system will be investigated. By forwarding and grouping the devices, it is simulated that each device can communicate directly with every other device. However, this means that additional resources and time have to be spent on communication. On the other hand, this makes it possible for security concepts to function more autonomously for a module and not require a connection to the entire system.

This work offers the opportunity to gain a deeper understanding of communication in industrial plants and at the same time contribute to the security landscape of operational technology (OT).

OBJECTIVES

• Simulation of a fully networked system in an industrial module in the IRS process engineering laboratory
• Validation of resource requirements and latencies
• Assessment of adaptability to other Ethernet-based industrial communication protocols

HELPFUL PRIOR KNOWLEDGE

• Enjoy working with real hardware
• Great interest in familiarizing yourself with industrial communication protocols
• Lecture on information and automation technology