Low-cost Edge Gateway Architecture for IIoT Interoperability in Industry

Industrial digitalization in emerging economies is frequently constrained by the high cost and rigidity of proprietary Industry 4.0 solutions. This work proposes and experimentally evaluates a low-cost edge gateway architecture that integrates an entry-level PLC, a Raspberry Pi, MQTT messaging and a cloud database to enable basic Industrial Internet of Things (IIoT) functions in Salvadoran manufacturing plants. The architecture is validated in a packaging line case study, where production counting data are acquired from a Siemens LOGO! 8 PLC, processed on a Raspberry Pi using Node-Red and Python, and published to a Supabase cloud backend for visualization and analysis. Over a set of controlled experiments, the prototype achieves a counting error below 1.2%, a 95th-percentile end-to-end latency below 250ms and data delivery above 99.5%, while remaining compatible with the RAMI 4.0 reference model and common OT/IT separation practices. The results indicate that the proposed approach can serve as a practical and affordable first step towards IIoT interoperability in Salvadoran industry, addressing a critical gap in resource-constrained environments.

• Publication year

  2025

• Venue

  2025 IEEE International Conference on Machine Learning and Applied Network Technologies (ICMLANT)

• Publication date

  2025-12-11

• Fields of study

  Not labeled

• Identifiers
  DOI 10.1109/ICMLANT68509.2025.11394856
• External record

  Open on Semantic Scholar

• Source metadata

  Semantic Scholar

• No claims are published for this paper.

• No concepts are published for this paper.

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