Tag - OPC UA
OPC UA, Modbus, and BACnet should not be compared only by which protocol is newer. Modbus fits low-level device register access, BACnet fits building automation interoperability, and OPC UA fits industrial semantic modeling, edge aggregation, and cross-system object views.
Blog, IoT Protocols and Interoperability , May 6, 2026 , BACnet, Building Automation, Edge Gateway, Industrial IoT, Modbus, OPC UA, Protocol Selection
Legacy industrial equipment projects usually fail when teams push PLCs, meters, and serial devices straight into the cloud without a stable edge boundary. This article outlines a safer brownfield-to-cloud path built around asset inventory, edge normalization, reliable uplink, and controlled write-back.
Agentic IoT becomes fragile when A2A, MCP, OPC UA, and Modbus are treated as interchangeable layers. A more stable architecture uses A2A for agent coordination, MCP for controlled tool access, OPC UA for asset semantics, and Modbus for field execution.
Blog, IoT Protocols and Interoperability , April 2, 2026 , A2A, Agentic IoT, control plane, Industrial IoT, MCP, Modbus, OPC UA
Industrial IoT platforms that treat Modbus, OPC UA, MQTT, and HTTP as isolated drivers usually lose control of semantic mapping, error handling, command confirmation, and data quality. This article outlines a safer protocol adapter layer design.
Blog, IoT Protocols and Interoperability , March 31, 2026 , Command Pipeline, Data Modeling, Edge Gateway, HTTP API, Industrial IoT, Modbus, MQTT, OPC UA, Platform Architecture, Protocol Adapter Layer
OPC UA, MQTT, and Modbus are not simple replacements for one another in industrial IoT. In many practical architectures, Modbus stays at device access, OPC UA unifies edge semantics, and MQTT carries northbound events and decoupled platform integration.
Blog, IoT Protocols and Interoperability , March 27, 2026 , device integration, Edge Gateway, Industrial IoT, Modbus, MQTT, OPC UA, protocol layering
What is OPC UA FX and how does it improve industrial interoperability? Learn how it works, how it compares to MQTT, and when to use it in industrial IoT systems.