Capabilities of 4G SCADA systems in Industry 4.0-scenarios

Transcription

1 Capabilities of 4G SCADA systems in Industry 4.0-scenarios Michael Gundall, Jörg Schneider, Hans D. Schotten 23. ITG Fachtagung Mobilkommunikation 16. Mai 2018

2 Contents Motivation Prevailing Communication in Industry Mobile Radio Communication in Industry 4.0 Testbed Evaluation Conclusion and Outlook 5/15/2018 2

3 Motivation: Emerging Use Cases Additive sensing Resource Offloading / Cloud offloading Integration of brownfield facilities Local Control Mobile Robotics Image Source:[3] Migration Remote Control Condition Monitoring Image Source:[2] Image Source:[3] Image Source:[4] 5/15/2018 [1] TACNET 4.0: [2] [3] Nokia Solutions and Networks Management International GmbH [4] Bosch Rexroth: 3

4 Motivation: Emerging Use Cases Additive sensing Resource Offloading / Cloud offloading Integration of brownfield facilities Local Control Mobile Robotics Image Source:[3] Migration Remote Control Condition Monitoring Image Source:[2] Image Source:[3] Image Source:[4] 5/15/2018 [1] TACNET 4.0: [2] [3] Nokia Solutions and Networks Management International GmbH [4] Bosch Rexroth: 4

5 Prevailing Communication in Industry Automation pyramid Heterogeneity increases in lower levels Heterogeneity is based on different requirements of level and application Real-time classes [3] for classifying Industrial Ethernet protocols Real-time class A: t cycle 100 ms Real-time class B: t cycle 10 ms Real-time class C: t cycle 1 ms Image Source: [4] t cycle = 2 t E2E Latency(Application) [3] M. Wollschlaeger, T. Sauter, and J. Jasperneite, The Future of Industrial Communication: Automation Networks in the Era of the Internet of Things and Industry 4.0, in IEEE Industrial Electronics Magazine, March [4] C. Klettner, T. Tauchnitz, U. Epple, L. Nothdurft, C. Diedrich, T. Schr oder, D. Goßmann, S. Banerjee, M. Krauß, C. Latrou, and L. Urbas,, Namur Open Architecture, Mar /15/2018 5

6 Prevailing Communication in Industry Automation pyramid: SCADA-Level Monitoring HMI Real-time class A or less Exchange of relevant I/O values Heterogeneity of possible protocols forces homogeneity of devices IP-based IE protocols Real-time class A: t cycle 100 ms Real-time class B: t cycle 10 ms Real-time class C: t cycle 1 ms Image Source: [4] [3] M. Wollschlaeger, T. Sauter, and J. Jasperneite, The Future of Industrial Communication: Automation Networks in the Era of the Internet of Things and Industry 4.0, in IEEE Industrial Electronics Magazine, March [4] C. Klettner, T. Tauchnitz, U. Epple, L. Nothdurft, C. Diedrich, T. Schr oder, D. Goßmann, S. Banerjee, M. Krauß, C. Latrou, and L. Urbas,, Namur Open Architecture, Mar /15/2018 6

7 Mobile Radio Communication in Industry 4.0 OPC Unified Architecture Protocol Services / Message exchange types Attribute Service Set Read Service Write Service Monitored Item and Subscription Service Set Create Subscription Service Publish Service Image Source: [5] [5] W. Mahnke, S.H. Leitner S.H., and M. Damm, OPC Unfied Architecture, Springer Berlin Heidelberg, /15/2018 7

8 Mobile Radio Communication in Industry th Generation Wireless Communication System Necessity of mobile radio communication in Industry 4.0 scenarios by increasing wireless use cases 5G concepts: Network slicing guarantees specified QoS requirements Private networks / virtual private networks Mobile edge computing LTE air interface is integrated in 5G Check, if LTE air interface is able to fulfil requirements of SCADA applications 5/15/2018 8

9 Testbed - Components UE 1 (HMI): Siemens TP 700 Comfort UE 2 (HMI): Android Tablet UE 3 (PLC 1): Siemens S7-1512F UE 4 (PLC 2): Siemens S7-314C RAN: Intel NUC + USRP EPC: Intel NUC Factory-Cloud/MEC: Intel NUC LTE implementation: openairinterface [6] Virtualization: Docker [7] [6] EURECOM: [7] Docker Inc: 5/15/2018 9

10 Evaluation Benchmarking of relevant KPIs: E2E-latency All Devices have integrated echo servers Usage of Ping Request to measure the E2E-Latency: Accuracy/Resolution of 1ms: sufficient in this case t RTT = 2 t E2E Latency Bit rate Measurement via open source software: iperf3 [8] Ethernet WLAN LTE E2E-Latency [ms] < Bit rate [Mbit/s] [8] ESnet/Lawrence Berkeley National Laboratory: 5/15/

11 Application A Comm. Interface Comm. Interface Application B Evaluation Identification of the cycle time: Use of OPC UA Read Service t start : Read Request Message t stop : Read Response Message t cycle = t stop t start Communication Service Measurement of 1000 iterations Ethernet WLAN LTE Messages 5/15/

12 Evaluation Identification of the cycle time: results Ethernet WLAN LTE Ethernet WLAN LTE Min [ms] Max [ms] Avg [ms] /15/

13 Evaluation Identification of the cycle time: results Ethernet WLAN LTE E2E-Latency [ms] < Bit rate [Mbit/s] Ethernet WLAN LTE Min [ms] Max [ms] Avg [ms] /15/

14 Evaluation Testbed characteristics and performance estimation Read Service Read Request Message Read Response Message 12 I/O values per Read Message Update interval: 100 ms (real-time class A) Message... Sensor 1 Sensor 2 Sensor N Ethernet WLAN LTE I/O values /15/

15 Conclusion and Outlook OPC UA protocol enables platform independence LTE air interface fulfils requirements of SCADA application deployed in a realistic testbed Cycle time Bit rate Determinism Necessity of 5G concepts for industry acceptance Private networks Network slicing Mobile edge computing 5/15/

16 Thank your for your attention! Any Questions? 5/15/