DNP3: The Protocol Behind Utility and SCADA Communication
DNP3 is a specialised protocol common in utility and larger industrial SCADA systems. Here's what it does and where it typically shows up.
What DNP3 actually does
Distributed Network Protocol 3 is designed specifically for reliable communication between control centres and remote field equipment — originally developed for the electrical utility industry, where reliably reporting status and receiving commands over sometimes unreliable, long-distance communication links is a core requirement.
Where it's found beyond utilities
Beyond electrical utilities, DNP3 shows up in water and wastewater treatment plants, oil and gas infrastructure, and other larger-scale industrial SCADA deployments where equipment is spread across a wide geographic area and reliable, secure communication over that distance is critical.
Why this matters for an integration project
A facility with DNP3-based SCADA equipment needs an integration gateway specifically capable of speaking DNP3 to bridge that data into a modern dashboard — this is a more specialised protocol than the common building-automation or consumer-IoT protocols, and it's worth confirming a proposed integration partner actually has direct experience with it before committing to a project scope.
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