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ICT performance characteristics
Industrial Reference ICT Architectures
Reference Architectural Model Industrie 4.0 (RAMI 4.0)
RAMI 4.0 Vertical Axis and associated standards
Business Layer (RAMI 4.0)
Comment:
B2MML – Business to Manufacturing Mark-up Language. Data standard used to define the process (i.e. the set of operations to be carried out by the cell for each unique product), what resources are required for each process, the materials needed and more. The full process would be designed by engineers, and then the SCADA would break the ‘master’ B2MML process representation into sub-processes and send these to the resources via the service bus. These would then trigger the start of processes by the PLCs.
ATS Bus - Enabled a single, common service bus for data exchange between the PLCs and other high level components of the system, including a SCADA system. Used a broker-based publish-subscribe approach to decouple the physical sources and destinations of the data to facilitate reconfigurability.
Nservicebus - The underlying technology which enabled the ATS Bus to exchange data.
OPC UA (Kepware) – Many devices could not interface directly with the service bus, so OPC UA was used to extract data and publish it to the service bus.